CMMG MK3 BANSHEE 8.6 Blackout AR-10 Pistol, 12.5 in Threaded Barrel, Ambi Controls, M-LOK Handguard, SR-25/LR-308 Mag Compatible
This CMMG MK3 BANSHEE is a large-frame AR-10 pattern pistol chambered in 8.6 Blackout, built on CMMG's MK3 DPMS/LR-308 Gen1 high-pattern platform. It pairs a 12.5 inch threaded barrel and flash hider with a free-float M-LOK handguard, and features ambidextrous controls and an adjustable pistol stabilizing brace with CMMG FASTBACK hardware. It is compatible with SR-25/LR-308 pattern magazines and is made in the USA.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Superficial scratches and minor blemishes are present. The muzzle device shows finish wear from installation. The Picatinny rail has finish wear from a previously mounted optic.
What’s Included
- CMMG-branded soft rifle case
- 1x 20-round Magpul PMAG LR/SR GEN M3 magazine
The MK3 BANSHEE runs a semi-automatic, direct-impingement system on CMMG's large-frame DPMS/LR-308 Gen1 high-pattern platform. It feeds from SR-25/LR-308 magazines and is configured here for 20+1 capacity in 8.6 Blackout.
The 12.5 inch barrel is threaded and fitted with a flash hider, with the muzzle marked "8.6 BLK." A slick-side upper omits the forward assist while retaining a brass deflector and ejection-port cover for clean, streamlined operation.
Its free-float aluminum M-LOK handguard and continuous Picatinny top rail provide rigid accessory mounting while keeping weight forward under control. The receiver is 7075-T6 aluminum.
User-focused controls include an ambidextrous safety and ambidextrous right-side bolt catch/release, paired with a standard magazine release. An adjustable pistol stabilizing brace uses CMMG FASTBACK hardware with an SB Tactical brace tail for quick length-of-pull changes.