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CMMG
The CMMG Banshee Mk17 is a 9mm pistol-caliber AR platform designed around Sig Sauer P320 magazine compatibility. If you've been running a P320 handgun and want seamless mag sharing with a short-barreled rifle platform, the Banshee Mk17 lets you do exactly that—while keeping you in full AR15 ergonomics and modularity. The 8-inch barrel and fixed ejector radial delayed blowback design deliver reliable performance in a compact, maneuverable package ideal for home defense, vehicle storage, or anyone building a cohesive 9mm ecosystem.
Build quality starts with a billet 6061 T6 aluminum upper and forged 7075 T6 aluminum lower receiver, both finished in Cerakote for durability. The CMMG EML7 handguard runs full M-LOK slots on the sides and bottom, plus M-LOK between top picatinny sections—plenty of real estate for lights, lasers, or other must-have gear. Everything wears the CMMG ZEROED brand touches: ambi charging handle, single-stage trigger, 60/90-degree safety selector, and pistol grip that feel right at home in an AR ecosystem.
Weighing 4.9 lbs and stretching 23.7 inches end-to-end, the Mk17 is genuinely portable. The CMMG RipBrace gives you rapid deployment and a stable shooting platform, while the CMMG ZEROED linear compensator tames the 1:10-twist barrel's muzzle impulse. Thread pitch is 1/2 x 28, standard for 9mm, so suppressors and muzzle devices are readily available. Accept P320 21-round mags, and you've got capacity that matches your handgun logistics.
This is a purpose-built 9mm platform that respects AR shooters' expectations: proven controls, mil-spec dimensions, and genuine customization options. Not a gimmick—a practical way to consolidate your 9mm ammo, mags, and muscle memory across rifle and pistol.
| Caliber | 9mm |
| Barrel Length | 8 inches |
| Barrel Twist | 1:10 |
| Barrel Contour | MT |
| Barrel Material | 4140CM SBN |
| Operating System | Fixed Ejector Radial Delayed Blowback |
| Muzzle Device | CMMG ZEROED Linear Comp |
| Muzzle Thread | 1/2 x 28 |
| Upper Receiver | Billet 6061 T6 Aluminum |
| Lower Receiver | Mk17 Forged 7075 T6 Aluminum |
| Handguard | CMMG EML7 M-LOK |
| Charging Handle | CMMG ZEROED Ambi |
| Pistol Grip | CMMG ZEROED Pistol Grip |
| Buffer Type | Carbine |
| Receiver Extension | CMMG 6 Position Fastback Extension |
| Brace | CMMG RipBrace |
| Trigger | ZEROED Drop-In Single Stage |
| Trigger Guard | Integrated |
| Safety Selector | CMMG ZEROED 60/90 Degree Ambi |
| Magazine | Sig Sauer P320 (21-round) |
| Weight | 4.9 lbs |
| Overall Length | 23.7 inches |
| Finish | Cerakote Standard |
Yes. The Mk17 is specifically designed around Sig Sauer P320 magazine compatibility, and accepts 21-round P320 mags. This design lets you run the same magazines across both your handgun and rifle platform.
Yes. The barrel has a 1/2 x 28 threaded muzzle and ships with a CMMG ZEROED linear compensator. You can remove the comp and attach a suppressor or other 1/2 x 28 muzzle device.
The pistol ships complete with the CMMG RipBrace, CMMG ZEROED ambi charging handle, CMMG ZEROED drop-in single-stage trigger, ambi safety selector, CMMG ZEROED linear comp, and CMMG EML7 M-LOK handguard. Magazine is not included.
Yes. The Mk17 retains full AR15 functionality and controls, including an ambi charging handle, integrated trigger guard, ambi safety selector, and standard pistol grip ergonomics. All controls are in familiar AR positions.
CMMG
The CMMG Banshee Mk17 is a 9mm pistol-caliber AR platform designed around Sig Sauer P320 magazine compatibility. If you've been running a P320 handgun and want seamless mag sharing with a short-barreled rifle platform, the Banshee Mk17 lets you do exactly that—while keeping you in full AR15 ergonomics and modularity. The 8-inch barrel and fixed ejector radial delayed blowback design deliver reliable performance in a compact, maneuverable package ideal for home defense, vehicle storage, or anyone building a cohesive 9mm ecosystem.
Build quality starts with a billet 6061 T6 aluminum upper and forged 7075 T6 aluminum lower receiver, both finished in Cerakote for durability. The CMMG EML7 handguard runs full M-LOK slots on the sides and bottom, plus M-LOK between top picatinny sections—plenty of real estate for lights, lasers, or other must-have gear. Everything wears the CMMG ZEROED brand touches: ambi charging handle, single-stage trigger, 60/90-degree safety selector, and pistol grip that feel right at home in an AR ecosystem.
Weighing 4.9 lbs and stretching 23.7 inches end-to-end, the Mk17 is genuinely portable. The CMMG RipBrace gives you rapid deployment and a stable shooting platform, while the CMMG ZEROED linear compensator tames the 1:10-twist barrel's muzzle impulse. Thread pitch is 1/2 x 28, standard for 9mm, so suppressors and muzzle devices are readily available. Accept P320 21-round mags, and you've got capacity that matches your handgun logistics.
This is a purpose-built 9mm platform that respects AR shooters' expectations: proven controls, mil-spec dimensions, and genuine customization options. Not a gimmick—a practical way to consolidate your 9mm ammo, mags, and muscle memory across rifle and pistol.
| Caliber | 9mm |
| Barrel Length | 8 inches |
| Barrel Twist | 1:10 |
| Barrel Contour | MT |
| Barrel Material | 4140CM SBN |
| Operating System | Fixed Ejector Radial Delayed Blowback |
| Muzzle Device | CMMG ZEROED Linear Comp |
| Muzzle Thread | 1/2 x 28 |
| Upper Receiver | Billet 6061 T6 Aluminum |
| Lower Receiver | Mk17 Forged 7075 T6 Aluminum |
| Handguard | CMMG EML7 M-LOK |
| Charging Handle | CMMG ZEROED Ambi |
| Pistol Grip | CMMG ZEROED Pistol Grip |
| Buffer Type | Carbine |
| Receiver Extension | CMMG 6 Position Fastback Extension |
| Brace | CMMG RipBrace |
| Trigger | ZEROED Drop-In Single Stage |
| Trigger Guard | Integrated |
| Safety Selector | CMMG ZEROED 60/90 Degree Ambi |
| Magazine | Sig Sauer P320 (21-round) |
| Weight | 4.9 lbs |
| Overall Length | 23.7 inches |
| Finish | Cerakote Standard |
Yes. The Mk17 is specifically designed around Sig Sauer P320 magazine compatibility, and accepts 21-round P320 mags. This design lets you run the same magazines across both your handgun and rifle platform.
Yes. The barrel has a 1/2 x 28 threaded muzzle and ships with a CMMG ZEROED linear compensator. You can remove the comp and attach a suppressor or other 1/2 x 28 muzzle device.
The pistol ships complete with the CMMG RipBrace, CMMG ZEROED ambi charging handle, CMMG ZEROED drop-in single-stage trigger, ambi safety selector, CMMG ZEROED linear comp, and CMMG EML7 M-LOK handguard. Magazine is not included.
Yes. The Mk17 retains full AR15 functionality and controls, including an ambi charging handle, integrated trigger guard, ambi safety selector, and standard pistol grip ergonomics. All controls are in familiar AR positions.
