CMMG Banshee MK4 5.7x28mm 5in 40+1

The CMMG Banshee MK4 in 5.7x28mm is an ultra-compact AR-style pistol designed for close-range use on the range and for compact handling scenarios. With a short 5-inch barrel and a high-capacity 40+1 configuration, it delivers the compact form factor and magazine capacity sought in a modern AR pistol.

Built on CMMG's Mk4 AR15 platform, this Banshee features a Black Nitride medium taper threaded barrel and a durable Midnight Bronze Cerakote aluminum finish. The EML4 handguards provide M-LOK attachment points and an integrated handstop, while the receiver includes a full-length Picatinny top rail for optics and accessories. The firearm ships with CMMG Zeroed grips and is compatible with AR conversion magazines as specified by the manufacturer.

Key Specifications

• The caliber is 5.7x28mm.
• The barrel length is 5 inches.
• The capacity is 40+1.
• The barrel finish is Black Nitride.
• The handguards are EML4 M-LOK with slots at the 3, 6, and 9 o'clock positions.
• The receiver features a full-length Picatinny top rail.
• The finish on aluminum components is Midnight Bronze Cerakote.
• The pistol includes CMMG Zeroed grips.
• The handguards include an integrated handstop.
• The platform is built on the Mk4 AR15 design and uses a standard AR15 lower receiver.

Buy the CMMG Banshee MK4 5.7x28mm online today for a compact AR pistol option with modern M-LOK ergonomics and a full-length Picatinny rail.

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