The CMMG ZEROED Banshee Mk4 9mm Midnight Bronze is a suppressed AR-style pistol that ships with a ZEROED 36 suppressor tucked inside its oversized 11-inch M-LOK handguard (brand part no. 94A68CD-MB). CMMG describes it as a gun made to be a suppressor host: the 6.5-inch barrel runs CMMG’s Radial Delayed Blowback action in a fixed-ejector PCC upper, and the whole can disappears under the rail. The lower takes a standard AR-15 magwell pattern for CMMG’s 33-round and 10-round 9mm magazines, and this model ships with a 33-round magazine for 33+1. A CMMG RipBrace on a six-position FASTBACK extension and the full ZEROED control set round it out, with SD-style silicone handguard covers in the box. The Midnight Bronze Cerakote gives it a look that stands apart from the black Banshees.

Key Specifications

• Chambering is 9mm, an efficient and affordable cartridge for a suppressed host.
• Capacity is 33+1 with the included CMMG 33-round magazine.
• Barrel length is 6.5 inches, short enough to sit entirely inside the handguard with the can mounted.
• The barrel is 4140CM with a nitride finish and a medium-taper contour, rifled at a 1:10 twist.
• The operating system is Radial Delayed Blowback, CMMG’s design for a softer 9mm recoil impulse.
• The muzzle device is the included ZEROED 36 suppressor on a 1/2×28 muzzle thread.
• The handguard is an 11-inch M-LOK with a 1.72-inch inner diameter, which clears most modern suppressors.
• The brace is a CMMG RipBrace on a FASTBACK six-position receiver extension.
• The safety is a CMMG ZEROED 60/90-degree ambidextrous selector, with a ZEROED single-stage drop-in trigger.
• Weight is 6.1 pounds, with an overall length of 27 to 29.5 inches.

Frequently Asked Questions

What finish is this version? This is the Midnight Bronze Cerakote version. CMMG also builds the suppressed 9mm Banshee in Armor Black, Coyote Tan, FS Green and Tungsten.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Which magazines does it use? It uses CMMG’s 33-round or 10-round 9mm magazines in a standard AR-15 pattern magwell, and it ships with a 33-round magazine.

Buy the CMMG ZEROED Banshee Mk4 9mm Suppressed Pistol, 33+1, Midnight Bronze

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through CMMG‘s short barrel rifles and suppressed builds lineup and our Lubbock, Texas team will handle the transfer.