The CMMG Banshee Mk4 pistol in 5.56 NATO (brand part no. 55A420A-AB) runs the shortest 5.56mm barrel CMMG has ever offered on the Banshee line at 10.5 inches, built for shooters who want a genuine compact backpack or truck gun. CMMG tops the muzzle with a Zeroed linear compensator threaded 1/2×28 and wraps the barrel in an EML9 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, this short-barreled Banshee Mk4 favors shooters who want the smallest possible 5.56 footprint.

Key Specifications

• The chambering is 5.56 NATO, also rated for .223 Remington.
• Magazine capacity is 30 rounds.
• The barrel measures 10.5 inches, the shortest 5.56 barrel CMMG has offered on this line.
• The muzzle is threaded 1/2×28 and wears a Zeroed linear compensator.
• The handguard is a CMMG EML9 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

Is this the shortest 5.56 Banshee available? Yes, at 10.5 inches it’s the shortest 5.56mm barrel CMMG has offered on this line.

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

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

Buy the CMMG Banshee Mk4 Pistol, 10.5-Inch 5.56 NATO

The shortest 5.56 barrel CMMG has ever offered makes this Banshee Mk4 an ideal compact backpack or truck gun. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.