The CMMG Banshee Mk4 pistol in 5.56 NATO (brand part no. 55AC20A-AB) balances carbine-length ballistic performance with the maneuverability of a 12.5-inch-barreled AR pistol, built on CMMG’s ultra-modular Mk4 platform. CMMG tops the muzzle with a Zeroed linear compensator threaded 1/2×28 and wraps the barrel in an EML11 M-LOK handguard with full-length M-LOK slots on both sides and the bottom. A CMMG RipBrace ships installed alongside a Zeroed drop-in trigger and a Zeroed ambidextrous charging handle, with billet 6061 upper and forged 7075 lower receivers. The pistol ships with one 30-round Magpul PMAG. Among AR pistols, the Banshee Mk4 in 5.56 favors shooters who want extra barrel length without stepping up to a full rifle.

Key Specifications

• The chambering is 5.56 NATO, also rated for .223 Remington.
• Magazine capacity is 30 rounds.
• The barrel measures 12.5 inches.
• The muzzle is threaded 1/2×28 and wears a Zeroed linear compensator.
• The handguard is a CMMG EML11 M-LOK design.
• A CMMG RipBrace ships installed.
• The trigger is a Zeroed drop-in trigger.
• The charging handle is a Zeroed ambidextrous design.
• The receivers are a billet 6061 upper and forged 7075 lower.
• The pistol ships with one 30-round Magpul PMAG.

Frequently Asked Questions

Does this pistol include a brace? Yes, a CMMG RipBrace ships installed.

What magazine ships with the pistol? One 30-round Magpul PMAG.

Is the barrel threaded? Yes, 1/2×28, with a Zeroed linear compensator installed.

Buy the CMMG Banshee Mk4 Pistol, 5.56 NATO

Extra barrel length and CMMG’s full Zeroed control package make this Banshee Mk4 a versatile 5.56 pistol. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL as soon as it’s ready.