And for good reason.

Despite only being a single millimeter larger in diameter, the little round packs vastly more kinetic energy than 9mm parabellum.

Indeed, in certain loadings, the 10mm Auto approaches lower end .44 Magnum amounts of energy. But unlike most magnum cartridges, 10mm is designed from inception for use in auto-loading firearms.

But for all its popularity among ammo aficionados and enthusiasts, there aren’t many commercial loadings available for the round.

Thankfully, long-time ammo maker, CCI just announced new brass-cased Blazer Brass FMJ 10mm ammunition. Check out the press release below.

Designed from inception for ultra long-range shots that require high ballistic coefficients, the 6mm Creedmoor round hasn’t found the same widespread acceptance of its slightly-larger big brother.

Just the same, it is gaining in popularity, so fans of the round will be thrilled that SIG is entering the fray — especially with their high-quality copper ammo. Check out the presser below.

One thing that wasn’t mentioned in the press release is how the round was designed specifically to run in AR-10 pattern rifles and carbines, making it a very solid choice for varmint-hunters and other small game hunters who like to engage targets at a distance.

Very Cool! Again, this is fantastic news for fans of the caliber, in particular the ones who wish to hunt with it. As for pricing and availability, nothing was officially mentioned yet, but shooters can visit www.sigsauer.com for the latest information.

This was especially true of the 7.62x51mm SCAR H, which managed to pair a lightweight, ultra-reliable battle rifle with incredibly light felt recoil.

The two are hardly synonymous; Most lightweight select-fire weapons in 7.62 NATO are uncomfortable to shoot in semi-automatic, and utterly uncontrollable in fully-automatic. But by utilizing a modified piston operating system, the SCAR H tamed the often brutal recoil of full-powered rifle rounds allowing SOCOM forces to field a hard-hitting battle rifle that out-ranged the military’s M4 carbine.

And while it had greater ballistic range, the accuracy of the SCAR H and SCAR 17 wasn’t up to snuff with precision 7.62 NATO platforms like Knight’s Armament’s SR-25. Which makes sense — the SCAR H is a battle rifle, not a DMR or sniper platform.

But civilian, law enforcement and military agencies still wanted the reliability of the SCAR with the accuracy of a DMR.

Read More: Now we mere mortals can own a civilian version of the precision-shooting Mk20

In response, FN released the SCAR 20s and MK 20 SSR. A longer, heavier barreled variant featuring an elongated upper receiver, PRS stock and Geisselle trigger that stretched the weapon’s effective range out to 800 meters. But there was one component of the rifle holding it back from even greater precision, one that was completely out of FN’s hands: the caliber.

But with their latest announcement, FN has now stretched the effective range of the SCAR 20s even further. Enter, the SCAR 20s in 6.5 Creedmoor.

For the uninitiated, 6.5 Creedmoor is a purpose-built, precision round designed by Hornady back in 2007. It offers a superior ballistic coefficient than 7.62×51, and its short overall length makes it suitable for use in short actions and auto-loading weapons like the SCAR.

This is incredible news for precision shooters who want an auto-loading rifle that is both soft-shooting and extraordinarily reliable. Check out the official press release below.

This new variation of the SCAR 20s seems to have everything a SCAR enthusiast could want. The only downside is the price: an MSRP of $4,499. But no one ever accused FN of making cheap products. For more information on the 6.5CM SCAR 20s, head over to https://fnamerica.com/products/fn-scar-series/fn-scar-20s-6-5cm-blk/ .

One company in particular that has done a fantastic job achieving both of these goals, is Maxim Defense.

Specializing in personal defense weapon (PDW) style carbines and pistols, the Minnesota-based arms maker just announced the latest addition to their product lineup: the MDX.

The MDX is a magazine-fed, semi automatic (and select-fire) carbine developed in response to the Army Expeditionary Warrior Experiment. Though based on Eugene Stoner’s M16/M4 carbines, the MDX utilizes a modified buffer and receiver extension to accommodate its proprietary ultra-compact PDW stock.

The MDX also uses ultra-rigid monolithic railed forearms that incorporate M-LOK slots for increased accessory mounting points without adding extra weight. This further adds to the weapons versatility and mission-configurable adaptivity.

The result is a compact weapon that offers the maneuverability and handiness of an SMG, with greater ballistic efficacy and increase effective range normally associated with a full-sized carbine.

The MDX is available in three calibers – traditional 5.56, .300blk and 7.62x39mm. The first two feeding from STANAG magazines, and the 7.62x39mm presumably feeding from either a proprietary magazine, or the ACS 7.62x39mm magazine.

These very unique-looking pistols, rifles and carbines are sure to make a big splash at SHOT. But what’s under the hood? Check out the presser below.

Very interesting. But the announcement doesn’t end there. Maxim also announced purpose-built ammunition to maximize effectiveness in short barreled weapons like the MDX and PDX.

Standard rifle ammunition is designed for maximum effect in full-length barrels. Since the new MDX/PDW weapons have considerably shorter lengths, Maxim Defense designed new loadings for the carbines to maximize ballistic efficacy.

This is exciting news not just for perspective buyers of the MDX or PDX, but also for anyone who owns an SBR or AR pistol in 5.56 NATO, .300blk or 7.62x39mm. The press release spells out the details below.

These new pistols, carbines and ammunition loadings are very interesting, and should be a hit with civilian and law enforcement alike. For more information, stay tuned to GearScout for coverage of the new weapons and ammunition that Maxim Defense will be showcasing at SHOT Show 2020, and for all the specifications visit https://www.maximdefense.com/

And more times than not, once a new round is developed and adopted by a military organization, they use the same ammo makers they’ve used for decades and sometimes even centuries.

Which is what makes the latest announcement from Sig Sauer so impressive. As of January 10th, Sig was awarded a $10 million contract from the US Army to manufacture so-called MK 248 MOD 1 and MOD 0 .300 Win Mag ammunition for use with Military sniper weapons.

Check out the full press release below.

This is exciting news for Sig, and serves as a testament to the efficiency of the manufacturer as well as the quality of the ammo. One question many civilians will have, is if these will lower the price of .300 Win Mag for civilian sales. In the short run, very likely not.

But with the increased production and the potential surplus runoff from SIG, it is a definite possibility that shooters could see a slight reduction in cost of the hard-hitting magnum round in the future. One can hope, at least. Either way, head over to www.sigsauer.com for more information on the contract, and all of Sig’s products.

Now, roughly one year later, the potent round appears to be gaining traction with additional gun manufacturers with the latest adopter being Franklin Armory.

The cartridge was developed in response to various hunting laws in the United States that restrict calibers to straight-walled cartridges. This effectively restricted hunters to .30-30, .45-70 Gov or similar rounds in lever-action, or breech-loading rifles.

To give hunters an auto-loading alternative, Winchester developed the .350 Legend – a round that functions in a modified STANAG magazine in standard AR-15 magazine wells.

Despite being developed initially as a hunting round, it is equally as effective as defensive cartridge. There are even super-heavy subsonic loads available for shooters running a suppressor who want more ballistic energy than .300 BLK.

So while the .350 Legend has plenty of great features, it wouldn’t mean anything if companies declined to manufacturing rifles chambered in it. Thankfully for fans of the round, Franklin Armory has just announced a few firearms in the caliber. Check out the official press release below:

Not only is Franklin building standard pistols and carbines in .350 Legend, but also California and New York compliant models. So shooters living in ban states can still have access to these new guns. T

he release continues on and states that versions of the .350 Legend firearms will be available at Media Day at SHOT Show 2020, so hopefully the staff here will have a chance to take them for a test spin. For additional information on the new Franklin Armory firearms including pricing and availability, visit https://franklinarmory.com/

The new 6mm 109 Grain Long Range Hybrid Target Bullets provide competitive PRS shooters and long-range accuracy enthusiasts a level of precision and consistency unmatched by all other bullet manufacturers. Utilizing advanced and proprietary manufacturing processes, Berger’s innovative Meplat Reduction Technology (MRT) System applies controlled pressure along the projectile nose, producing a homogeneous and repeatable bullet profile for the industry’s most consistent Ballistic Coefficients (BC).

The 6mm 109 Grain LRHT boasts a high BC, jump-tolerant hybrid ogive profile that is Doppler Radar verified with less than 1% BC variation. A high BC is desirable for competitive shooting, however, shot-to-shot consistency is most critical when engaging targets to 600 yards and beyond. The 109’s are tailored to cartridges such as 6mm Creedmoor, 6mm BR, Dasher, 6XC, 6BRX, and 6×47 among others. It offers the same stability factor as the industry-leading 105gr Hybrid Target and is a direct replacement for 1:8” twist barrels.

The 6mm 109’s offer several advantages,” said Bryan Litz, Berger’s Chief Ballistician. “Its ultra-sleek profile provides a higher Ballistic Coefficient (BC) resulting in less wind drift at all ranges. Using the proprietary MRT technology also results in a higher and more consistent BC which is important for reducing dispersion at long range.”

The Berger 6mm 109 Grain Long Range Hybrid Target Bullets are available at authorized Berger Retailers and at Bergerbullets.com/dealer-map. Use our Dealer Locator to find a store near you.

The new ammunition, bullet, reloading and security products will be available from stocking dealers, major retail sporting goods stores and their websites. Dealers can be found by visiting the Retail Locator on hornady.com.

Learn about the 2020 new products lineup at http://www.hornady.com/new-products.

NEW AMMUNITION

Subsonic Handgun and Rifle

Hornady Subsonic Ammunition — designed for accuracy and performance below the speed of sound — now comes in handgun loads, as well as three new rifle loads.

Available handgun loads:

• 9MM LUGER 147 GR. XTP

• 40 S&W 180 GR. XTP

• 45 AUTO 230 GR. XTP

New rifle loads:

• 30-30 WIN 175 GR. SUB-X

• 450 BUSHMASTER

• 45-70 GOVT 410 GR. SUB-X

Handgun Hunter

Handgun Hunter ammunition is built around a bullet as tough and rugged as the conditions and game demand. The MonoFlex handgun projectile is manufactured with a tough copper alloy that achieves deep penetration and 95% weight retention. Bullet expansion across a range of velocities is aided with a proprietary elastomer material added to the bullet’s open cavity. Upon impact, the elastomer compresses, then pushes out and causes the bullet to expand faster than a standard hollow-point design. Combined with premium cases, primers and propellants, Handgun Hunter ammunition benefits from years of producing hard-hitting GMX and MonoFlex rifle bullets to introduce a handgun version that lives up to our reputation.

Available loads:

• 9MM LUGER +P 115 GR. MONOFLEX

• 357 MAG 130 GR. MONOFLEX

• 40 S&W 135 GR. MONOFLEX

• 10MM AUTO 135 GR. MONOFLEX

• 44 REM MAG 200 GR. MONOFLEX

• 454 CASULL 200 GR. MONOFLEX

• 460 S&W MAG 200 GR. MONOFLEX

Outfitter

From the backcountry to the back-forty, trust your hunt to Outfitter ammunition. Featuring corrosion-resistant nickel-plated cases that are sealed watertight and topped with the accurate and rugged GMX® bullet, Outfitter ammunition is designed to perform under the toughest conditions. Four new offerings for 2020:

• 257 WBY MAG 90 GR. GMX

• 300 WBY MAG 180 GR. GMX

• 300 REM ULTRA MAG 180 GR. GMX

• 338 WIN MAG 225 GR. GMX

Frontier Cartridge

Frontier Cartridge features Hornady bullets in 223 Rem, 5.56 NATO, 300 Blackout and now 6.5 Grendel, as well as several new packaging counts. Applications range from plinking, target shooting and hunting to law enforcement training and self-defense. New for 2020:

• 223 REM 55 GR. FMJ 50 COUNT

• 223 REM 55 GR. HOLLOW POINT MATCH 50 COUNT

• 5.56 NATO 55 GR. FMJ (XM193) 50 COUNT

• 5.56 NATO 55 GR. HOLLOW POINT MATCH 50 COUNT

• 5.56 NATO 62 GR. SPIRE POINT 150 COUNT

• 6.5 GRENDEL 123 GR. FMJ 20 COUNT

• 300 BLACKOUT 125 GR. FMJ 50 COUNT

• 300 BLACKOUT 125 GR. FMJ 150 COUNT

Precision Hunter

Accuracy and terminal performance are the cornerstones of Hornady® Precision Hunter® factory-loaded ammunition. Great care has been given by Hornady engineers to develop superior, match­-accurate hunting loads that allow the ELD­-X® bullet to achieve its maximum ballistic potential. New for 2020:

• 300 WIN MAG 178 GR. ELD-X

American Whitetail

Loaded with legendary Hornady InterLock bullets in weights that have been deer hunting favorites for decades, American Whitetail ammunition combines generations of ballistics know-how with modern components and the technology you need to take the buck of a lifetime! New for 2020:

• 350 LEGEND 170 GR. INTERLOCK

• 450 BUSHMASTER 245 GR. INTERLOCK

LEVERevolution

LEVERevolution represents a breakthrough in ammo design for lever-action rifles and revolvers. The key to its innovation and performance is the patented elastomer Flex Tip technology of the FTX bullet. Safe to use in tubular magazines, the FTX bullet features a higher ballistic coefficient and delivers dramatically flatter trajectory for increased down-range performance. New for 2020:

• 7-30 WATERS 120 GR. FTX

Superformance

Superformance ammunition uses progressive propellants that deliver performance that’s simply unattainable from conventional ammunition, increasing a rifle’s performance up to 200 fps without extra chamber pressure, recoil, muzzle blast, temperature sensitivity, fouling, or loss of accuracy. New for 2020:

• 6MM CREEDMOOR 90 GR. GMX

Custom

Shooters looking for supreme accuracy and maximum knock-down power turn to Hornady Custom ammunition. Loaded with a variety of Hornady bullets, the excellent terminal performance of Hornady Custom ammunition makes it the preferred choice for hunters, competitive shooters, and plinkers. New for 2020:

• 350 LEGEND 165 GR. FTX

American Gunner

The American Gunner line of ammunition is a collection of tried-and-true, versatile loads that are popular for target shooting, hunting or self-defense. Made in the USA with premium components, American Gunner ammunition combines generations of ballistics know-how with modern technology. New for 2020:

• 7.62X39 123 GR. HP MATCH

Critical Defense

Critical Defense is engineered to deliver the pinnacle of threat-stopping power. The FTX bullet maximizes the potential of a hollow-point bullet. Its patented Flex Tip aids expansion and eliminates clogging when passing through clothing. Nickel-plated cases increase visibility in low-light situations. Low-flash propellants won’t disrupt night vision and deliver consistent performance. New for 2020:

• 327 FEDERAL MAG 80 GR. FTX

NEW BULLETS

A-Tip Match

Years of research and testing by the Hornady Ballistic Development Group have led to the creation of the ultimate low-drag, high-performance match bullet. Advanced precision-machined aluminum tip design delivers tighter groups and reduced drag variability. Doppler radar verified low drag coefficient (high BC) bullets are forgiving of twist rate, seating depth, and muzzle velocity. AMP® bullet jacket offers uniformity and concentricity. Sequential packaging right off the press minimizes handling throughout the manufacturing process, ensuring the ultimate in consistent performance. New for 2020:

• 22 CAL. 90 GR.

• 7MM 166 GR.

• 7MM 190 GR.

• 30 CAL. 176 GR.

• 338 CAL. 300 GR.

Sub-X

Sub-X (Subsonic — eXpanding) bullets deliver big results without a big bang! Designed to provide deep penetration below the speed of sound, the Sub-X bullet features a lead core. Long grooves in its gilding metal jacket combine with its flat profile and the patented Flex Tip insert within the bullet’s hollow-point cavity to help it expand reliably at low velocities. Cannelures provide positive case crimp, making Sub-X bullets ideal for semiautomatic guns. New for 2020:

• 30 CAL. 190 GR.

NTX

NTX bullets provide peerless performance with a non-traditional core material, crafted from a frangible copper alloy, that combines accuracy, reliability and Hornady quality for use in areas with restrictions on lead. New for 2020:

• 17 CAL. 15.5 GR.

V-MAX

With its combination of proven materials, innovative design and streamlined profile, the Hornady V-MAX bullets represent the pinnacle of what a specialized varmint bullet can achieve, offering straight-line trajectories, enhanced accuracy, dramatic expansion and explosive fragmentation at a wide range of distances and velocities. New for 2020:

• 5.45 CAL. 60 GR.

GMX

Hard-hitting and deep-penetrating, the GMX bullet combines monolithic construction with pioneering ballistic design to meet the need for a premium, non-lead bullet. Tougher than pure copper, the mono-metal copper alloy has been proven to shoot cleaner, foul less and deliver consistently even pressure curves. The tough alloy material routinely retains 95% or more of its original weight and expands up to 1.5 times its original diameter. New for 2020:

• 6MM 90 GR. (6mm Creedmoor)

• 6.5MM 140 GR.

• 338 CAL. 225 GR.

FTX

Hornady FTX bullets revolutionized lever gun ballistics, creating a new level of performance for these popular firearms. Lever gun enthusiasts can now harness the accuracy, power and long-range performance of a tipped bullet that’s safe to load in tubular magazines. New for 2020:

• 7MM 120 GR.

• 35 CAL. 165 GR. (350 Legend)

InterLock

Our traditional line of bullets features exposed lead tips for controlled expansion and hard-hitting terminal performance. With our exclusive InterLock design, a raised ring inside the jacket that is embedded in the bullet’s core keeps the core and jacket locked together during expansion to retain mass and energy. New for 2020:

• 35 CAL. 170 GR. (350 Legend)

• 45 CAL. 245 GR.

NEW RELOADING PRODUCTS

Auto Charge Pro

The new Auto Charge Pro powder measure provides precise, customizable powder dispensing in an easy-to-use, space-saving unit. Accurate to within 0.1 grain, the Auto Charge Pro offers customizable trickle speeds for various powder types, as well as custom time settings. Store settings for up to four custom loads or use the factory setting. The backlit touch screen is easy to read, while a large knob on the side simplifies powder emptying. Other features include the large powder capacity, built-in bubble level, and smaller footprint than competing brands.

Precision Measurement Station

Precision reloaders know the most consistent cartridges are built with the most consistent components. The Hornady Precision Measurement Station allows the reloader to sort components according to size and quality by comparing bullet ogive location, cartridge base to ogive location, headspace location and overall case length. Measure bullet runout for true cartridge case concentricity, and identify inconsistencies such as case and bullet dents. The base weighs nearly 8 pounds and has leveling feet for stability. The tool includes five bushings, seven bullet comparators, and accessory mount.

L-N-L Impact Bullet Puller

Effective on most rifle or pistol cartridges up to .45 caliber, the L-N-L Impact Bullet Puller captures the bullet and powder for reuse by removing bullets from cartridges without causing damage. The innovative handle design stores two extra collets.

NEW HORNADY SECURITY PRODUCTS

RAPiD® Safe Ready Vault

Patented RFID technology combines with unprecedented storage flexibility in the new RAPiD Safe Ready Vault. The RFID technology unlocks Ready Vault faster than keypads and biometrics. Metal interior peg walls allow patented gun racks to be mounted in numerous configurations (3 racks included). The patented dual-purpose gun racks accommodate up to eight long guns and 14 handguns by utilizing the otherwise empty space between barrels. The heavy-duty steel housing and five hardened locking lugs provide confident protection of valuables.

RAPiD Safe Night Guard

The RAPiD Safe Night Guard keeps your handgun as close as your nightstand. Patented RFID technology offers the quickest, most dependable access to your firearm while providing unmatched security. Plus, the Night Guard offers the additional functionality of a clock and USB charging ports. The tempered glass front panel elegantly contains the RFID reader, clock display, and access code keypad. The spring-assist drawer quietly slides open to reveal a padded interior, which accommodates most full-sized handguns and/or valuables.

The 6.5 Grendel falls into the latter category. It’s based on the .220 Russian cartridge, and it packs more punch than a 5.56mm.

But there’s already stiff competition in this area.

The 5.56 has a lot of staying power simply because AR-15 parts and 5.56 ammunition are so ubiquitous.

The .300 Blackout is a better option if you’re looking for a straight over replacement for the 5.56mm with better tactical performance.

And the 6.5 Creedmoor is the cool round in the long range game right now.

So, what does the 6.5 Grendel have to offer? And, could it be the next big thing?

Here are five reasons why Grendel could make a run for it.

Affordability

This is a big one. If there’s a demand for firearms chambered in a certain cartridge, firearms manufacturers will usually build guns to meet that demand. And it’s hard to generate demand for a round if nobody can afford it.

This is good news for the Grendel because the round has become far more affordable in the last 10 years. Now, the cheapest steel case 6.5 Grendel ammunition costs about the same per-round as cheap 5.56mm. And 6.5 Grendel is often less expensive than .308 ammunition.

Additionally, 6.5mm barrels have gotten much more affordable since the 6.5 Creedmoor became so popular —making the cost of building a 6.5 Grendel rifle comparable to the cost of building any other AR-15.

So, the 6.5 Grendel could continue to gain popularity as people look for a round that fits AR-15 pattern rifles but offers better long range performance at about the same price as 5.56mm.

Long Range Performance

The 6.5 Grendel is not the long range precision powerhouse that 6.5 Creedmoor is. However, 6.5 Grendel offers surprisingly strong performance out to about 800 meters.

The 6.5 Grendel could be pushed to 1000 yards. But, the round isn’t ideal for that sort of extreme long range shooting.

It’s a legitimate option for DMR type rifles that require better long range capabilities than a standard AR-15, without adding too much weight to the platform.

The 6.5 Grendel also works as a medium range round for bolt-action rifles. However, it’s best suited to semi-automatic rifles.

Basically, the 6.5 Grendel is built for those who want a round that has a longer useful range than the 5.56mm, but isn’t as heavy as a .308 or as specialized as a 6.5 Creedmoor.

AR-15 Compatibility

We’ve mentioned it indirectly, but the 6.5 Grendel can be fired out of an AR-15 pattern rifle. Obviously, you need the correct upper receiver parts.

And you need caliber-specific magazines (300BLK beats 6.5 Grendel in that area).

But, in the end, you can shoot 6.5 Grendel out of an AR-15 type rifle. This gives the 6.5 Grendel a lot of longevity because the AR-15 is so popular.

Also, an AR-15 chambered in 6.5 Grendel offers similar magazine capacity (26 rounds) and recoil to a standard AR-15.

So, the rifle feels and operates much like a standard AR-15, but it has better long range ballistics.

Hunting Viability

The 6.5 Grendel is a legitimate hunting round.

It may not be great in a bolt action rifle, but you could build an AR-15 for hunting around the 6.5 Grendel. It would have longer range and better terminal ballistics than a 5.56mm AR. And it would be a true modern sporting rifle.

Nobody could argue that.

It’s not 5.56mm

This might sound silly, but many people simply want a round that’s not 5.56mm.

Maybe they’re hipsters.

Maybe they’re contrarians.

Who knows. But a lot of people just like alternatives to the mainstream options. And, the 6.5 Grendel is a legitimate alternative to the 5.56mm.

But Is It the Next Big Thing?

In short, no.

The 6.5 Grendel certainly isn’t going anywhere, and it will likely continue to get more popular.

However, it’s not as good for just straight-up shooting as the 5.56mm. It’s not as tactically specialized as the 300BLK. And it’s not as capable of long range precision as the 6.5 Creedmoor.

It’s an affordable hunting round that shoots well from a semi-automatic rifle. That’s a cool niche. But, it’s not a major niche that turns a round into a core cartridge.

Also, there’s been very limited military adoption of the 6.5 Grendel. And — even though the military uses guns very differently than civilians — rounds that have widespread military deployment tend to be the most popular.

So, in the end, the 6.5 Grendel won’t be the next big thing. But, it’s still a very capable round that’s popular enough you’d have no problem finding a rifle and ammunition if you wanted to load it up for your next trip to the field.

The scalable hand grenade the Corps is looking at is manufactured by Nammo — the makers of the Corps’ single-shot light anti-tank rocket launcher known as the M72 LAW.

The grenade produces little fragmentation and relies on over-pressurization to produce casualties or knock out enemy forces hiding in enclosed rooms, Pat Woellhof, the director of Marine Corps operations for Nammo, told Marine Corps Times at the 2019 Modern Day Marine expo.

It’s known as an offensive hand grenade due to the small amount of fragmentation that disburses from the grenade upon explosion. The Corps calls it the Mk 21 Mod 0, and Woellhof says the Corps doesn’t have an offensive hand grenade in its arsenal.

Instead, the Corps relies on a defense grenade known as the M67 fragmentation grenade. That grenade has fragmentation that creates an effective casualty radius of 15 meters upon explosion.

There are some drawbacks to relying strictly on a defensive grenade, Woellhof said. With a defensive hand grenade, “you can’t throw it far enough to get outside the fragmentation,” Woellhof said.

Marines who cleared dense urban terrain in bloody fights in the Iraqi cities Fallujah and Haditha are still carrying pieces frag and shrapnel in their bodies from their own grenades, Woellhof explained.

Marines clearing rooms with defensive grenades may have also inadvertently caused civilian casualties, Woellhof said.

“If you throw an M67 into a room it doesn’t discriminate.”

Nammo’s offensive grenade can limit collateral damage. The device is modular, so a Marine can increase or decrease explosive power by adding grenade bodies. The explosive power of the grenade depends on how many grenade bodies are connected together.

A base grenade will cause concussions if a Marine tosses it into a room.

“And you know, they’ll wake up with a bad hangover,” Woellhof said.

Two connected base grenades will provide 261 grains of explosives and “will kill anything in a room,” Woellhof explained. Three grenade bases will produce 391 grains of explosives and can be used to destroy structures, he said.

The Corps is “interested and pursuing” the MK21 Mod 0 grenade but nothing has been signed or approved at this time, according to Maj. Joshua Benson, a Marine spokesman.