FN Five-seveN pistol owners can rejoice, there’s a new way to put your magazines to use. 5.7x28mm has quickly become the personal defense weapon caliber of choice for many. Offering near .22 LR levels of recoil and performance that rivals 5.56mm at close range it’s no surprise why. Even with a 5” barrel this BANSHEE™ sacrifices nothing when it comes to features. The Mk57™ platform is designed to use FN®* Five-seveN®* pattern magazines and still offers the full range of AR15 operational features like last round bolt hold open, and can utilize standard AR15 triggers. Originally developed for the .45 ACP MkG platform, CMMG has adapted their Radial Delayed Blowback system across their pistol caliber lineup to create pistols and rifles with a softer recoil impulse and reduced bolt weight compared to traditional straight blowback systems.

The BANSHEE series represents the most innovative AR pistols and SBRs available today. From the quick deploying RIPBRACE®, to the stylized receivers and EML™ handguards, every BANSHEE is tailor-made to be the personal defense weapon you can always depend on. New EML4 handguards feature M-LOK® slots at 3, 6, & 9 o’clock positions and a full length picatinny top rail for accessories as well as an integrated handstop.

Rapid Fire

• Overall weight: 4.8 lbs
• Overall length: 20.9"
• Barrel length: 5”
• Barrel Material: 4140CM, SBN
• Twist: 1:9
• Charging Handle: CMMG ZEROED Ambi
• Trigger: Mil-Spec Single Stage
• Receiver Group: Upper - Billet 6061 T6 Aluminum / Lower - Mk57 Forged 7075 T6 Aluminum
• Brace: CMMG Ripbrace
• Grip: CMMG ZEROED Pistol Grip
• Handguard: CMMG EML4 M-Lok
• Finish: Cerakote Standard
• Muzzle Device: CMMG ZEROED Linear Compensator
• Muzzle Thread: 1/2x28

What’s in the Box:

• CMMG Banshee Mk57 5.7x28mm
• Owners Manual