Description
Plenty of pistol caliber ARs run 9mm, but the 10mm crowd has been waiting for something with more muscle, and the Banshee Mk10 delivers it. The 8 inch barrel pulls noticeably more velocity out of 10mm loads than any duty-size handgun can, which is exactly why this platform has built a reputation as a truck gun, hog gun, and serious home defense setup. It feeds from double stack Glock-pattern 10mm magazines, so spares are cheap, easy to find, and there is a good chance you already own a few.
Why the Banshee Mk10 Shoots Softer Than It Should
The trick to running a cartridge this stout in a compact AR is CMMG's Radial Delayed Blowback system. Instead of relying on a heavy bolt to hold the breech closed like straight blowback guns, angled bolt lugs create a mechanical delay that bleeds off energy before the action opens. The result is less felt recoil, a lighter bolt, and a gun that stays flatter through fast strings. A ZEROED linear compensator up front pushes muzzle blast forward, and the H3 buffer setup keeps things cycling smoothly across the wide spread of 10mm factory loads, from soft target ammo to full-power hunting stuff.
Built Out Right From the Factory
CMMG did not cut corners on the parts list. The billet 6061 upper pairs with a forged 7075 lower, and the 8 inch 4140 chrome moly barrel wears a salt bath nitride finish with a 1:16 twist and .578×28 threaded muzzle. The ZEROED drop-in single stage trigger is a genuine step up from mil-spec, and the ambidextrous charging handle and 60/90 degree ambi safety make the controls friendly from either shoulder. The EML7 handguard gives you M-LOK real estate on three sides plus a Picatinny top rail for your optic, since it ships without sights and is begging for a red dot.
Where the Mk10 Banshee Earns Its Keep
At 5.1 pounds and 23.8 inches overall, this thing rides easily behind a seat or in a pack. Add the Armor Black Cerakote finish and CMMG's lifetime quality guarantee, and you have a hard-hitting 10mm that is built to be used, not babied.
Key Specifications
- Manufacturer: CMMG
- Model: Banshee Mk10
- MPN: 10AE30F-AB
- UPC: 810144728117
- Caliber: 10mm Auto
- Action: Semi-Auto, Radial Delayed Blowback
- Barrel Length: 8"
- Barrel Material: 4140 Chrome Moly, Salt Bath Nitride Finish
- Twist Rate: 1:16
- Muzzle Device: CMMG ZEROED Linear Compensator, .578×28 Threads
- Capacity: 30 Rounds (Glock-Pattern Magazine)
- Upper Receiver: Billet 6061-T6 Aluminum
- Lower Receiver: Forged 7075-T6 Aluminum
- Handguard: CMMG EML7 M-LOK
- Overall Length: 23.8"
- Weight: 5.1 lbs
What’s Included
- CMMG Banshee Mk10 10mm AR Pistol
- One 30-round Glock-pattern 10mm magazine
- 3.4 oz bolt weight (pre-installed)
- CMMG Lifetime Quality Guarantee
Frequently Asked Questions
What magazines does the CMMG Banshee Mk10 use?
It runs double stack Glock-pattern 10mm magazines, the same ones used in the Glock 20. That means spare mags are affordable, easy to track down, and available in a range of capacities. One 30-round magazine comes in the box.
How does the Banshee Mk10 handle the recoil of full-power 10mm loads?
CMMG's Radial Delayed Blowback system uses angled bolt lugs to mechanically delay the action opening, which soaks up energy and cuts felt recoil compared to straight blowback designs. Combined with the linear compensator directing blast forward, the Mk10 shoots much softer than you would expect from a hot cartridge in a 5 pound gun.
Does the Banshee Mk10 come with sights?
No, it ships without sights. The full-length Picatinny top rail makes it easy to mount a red dot, low power variable optic, or backup irons. A quality red dot on a riser is a popular setup for this pistol.
Can I suppress the CMMG Banshee Mk10?
Yes, the 8 inch barrel is threaded .578×28, so you can remove the factory linear compensator and mount a compatible suppressor. When running suppressed or shooting very hot loads, swapping to a heavier buffer helps keep cycling in the sweet spot, and CMMG publishes buffer guidance based on ammo power factor.





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