The CMMG Banshee Mk4 pistol in .300 Blackout (brand part no. 30AB20F-MB) wears a Midnight Bronze Cerakote finish across its aluminum frame and slide for a distinct-looking 12.5-inch AR pistol built on CMMG’s Mk4 platform. CMMG threads the barrel 5/8×24 for a Zeroed linear muzzle device and wraps it in an EML11 M-LOK handguard fed by a 0.750-inch gas system. A CMMG RipBrace ships installed alongside a Zeroed trigger and a Zeroed pistol grip, and the pistol ships with one 30-round magazine. Among AR pistols, this Midnight Bronze Banshee Mk4 favors shooters who want CMMG’s control package in a standout finish.
Key Specifications
- The chambering is .300 AAC Blackout.
- Magazine capacity is 30 rounds.
- The barrel measures 12.5 inches.
- The muzzle is threaded 5/8×24 for a Zeroed linear muzzle device.
- The gas system is a 0.750-inch pistol-length design.
- The handguard is a CMMG EML11 M-LOK design.
- A CMMG RipBrace ships installed.
- The trigger is a CMMG Zeroed component.
- The grip is a CMMG Zeroed pistol grip.
- The finish is Midnight Bronze Cerakote, applied to frame and slide.
Frequently Asked Questions
What finish does this pistol have? Midnight Bronze Cerakote, applied across the frame and slide.
Does this pistol include a brace? Yes, a CMMG RipBrace ships installed.
Is the barrel threaded? Yes, 5/8×24, for a Zeroed linear muzzle device.
Buy the CMMG Banshee Mk4 Pistol, Midnight Bronze
A standout Midnight Bronze Cerakote finish and CMMG’s full Zeroed control package make this Banshee Mk4 a distinctive .300 Blackout pistol. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.

