| Platform | Mk4 |
| Caliber | .338 ARC |
| Operating System | Direct Impingement |
| Barrel Length | 10.5 |
| Barrel Twist | 1:8 |
| Barrel Contour | MT |
| Barrel Material | 4140CM, Nitride Finish |
| Barrel Twist | 1:8 |
| Muzzle Device | CMMG ZEROED Linear Compensator |
| Muzzle Thread | 5/8 x 24 |
| Gas Port Location | Pistol |
| Gas Block | Non-Adjustable 0.750" |
| Upper Receiver | Mk4 Billet 6061 T6 Aluminum |
| Lower Receiver | Mk4 Forged 7075 T6 Aluminum |
| Hand Guard | EML9 |
| Finish | Cerakote |
| Charging Handle | CMMG ZEROED Ambi |
| Pistol Grip | CMMG ZEROED Pistol Grip |
| Stock / Brace | CMMG RipBrace |
| Trigger Guard | CMMG ZEROED Trigger Guard |
| Magazine | (1) 10rd CMMG 338 ARC |
| Weight | 5.6 lbs |
| Length | 26" |
Due to high demand and supply chain issues affecting many industries, some of our parts and accessories may be on backorder and have an extended lead time. Items currently on backorder can still be purchased and can typically be shipped within 25 business days.
Pistol, BANSHEE, Mk4, 338 ARC, 10.5"
338 ARC BANSHEE, the big bore caliber in the same AR15 platform PDW you love. Bringing excellent stopping power and energy transfer on target, 338 ARC makes a great choice for suppressed and unsuppressed shooting.
Available in a variety of Cerakote finish options, the BANSHEE series represents the most innovative AR pistols and SBRs available today. From the quick deploying RIPBRACE® to the stylized receivers and EML™ handguards, every BANSHEE is tailor-made to be the personal defense weapon you can always depend on. With full-length M-LOK® slots on both sides and the bottom of the handguard as well as M-LOK between the top Picatinny rail sections, you’ll always have enough space for those must-have accessories.
Mk4 ZEROED parts and accessories – Quality comes standard
The AR15 platform is well known for its capability for customization but picking the right parts doesn’t have to be a nightmare of homework. Everything from the RIPBRACE to the full kit of ZEROED parts and accessories are made here in the USA with quality and attention to detail that is second to none and each BANSHEE comes equipped with a slew of ZEROED parts standard, including:
Lifetime Quality Guarantee
We aim to please, that’s why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. Learn More.
~Firearms shipping to states with magazine capacity restrictions will only ship with 10rd magazines in place of standard capacity magazines. CMMG does not address any other state compliancy requirements for further restricted states.