The CMMG Banshee Mk3 (CMMG part no. 38A4A0BAB) brings more than 70 years of proven .308 Winchester performance into a genuine AR-10-pattern pistol. A 12.5-inch barrel won’t match the long-range reach of CMMG’s Endeavor rifles, but this Banshee still delivers real full-power punch in a shorter, more maneuverable package. CMMG builds its larger-caliber rifles and pistols, including .308 Win and 6.5 Creedmoor, on the Mk3 platform, sized to the LR-308/DPMS Gen 1 high-pattern design for full compatibility with that magazine and parts ecosystem. A CMMG RipBrace and 6-position receiver extension round out a build focused on real-world capability.

Key Specifications

• Chambered in .308 Winchester, a full-power cartridge trusted by hunters, marksmen, and militaries for over 70 years.
• Runs a 12.5-inch barrel for solid velocity retention from a full-power cartridge in a compact package.
• Built on CMMG’s Mk3 platform, sized to the AR-10/LR-308/DPMS Gen 1 high-pattern design.
• Cycles off a direct impingement gas system with a 1:10 twist rate.
• Wears a CMMG EML11 M-LOK handguard for a full-length accessory mounting surface.
• Includes CMMG’s RipBrace for a stable, adjustable shooting platform.
• Weighs approximately 7.4 pounds unloaded, a manageable weight for a full-power .308 pistol.

Frequently Asked Questions

What platform is this Banshee built on? The Mk3 platform, sized to the AR-10/LR-308/DPMS Gen 1 high-pattern design for full-power cartridges.

What caliber does it fire? .308 Winchester, a full-power cartridge with over 70 years of proven service.

Does it come with a brace? Yes, CMMG’s RipBrace ships installed on this Banshee.

Buy the CMMG Banshee Mk3 Pistol, .308 Win, 12.5-Inch, Armor Black

For shooters who want genuine .308 power in a package shorter than a traditional rifle, this Mk3 Banshee delivers real capability without excess bulk. Order it from our AR pistols lineup at our Lubbock, Texas gun shop for fast, insured shipping to your FFL.