JavaScript seems to be disabled in your browser. You must have JavaScript enabled in your browser to utilize the functionality of this website.
Classic Firearms Holiday Gift Guide - Shop Now
Shop Popular AR-15 RiflesSHOP NOW
Shop Popular HandgunsSHOP NOW
Shop AllIn Stock AmmoSHOP NOW
Exclusive Classic Firearms 30 Round AR MagazineGET YOURS
x
(This item has been previously added to your cart)
Sign up to be the first to know when this item is back in stock.
CMMG 55BA222: This .22 LR/Mk9 upper receiver assembly is made from forged 7075-T6 aluminum with a Type III hard anodized finish, and ships with a forward assist, dust cover and deflector. The Mk4 platform accepts standard AR15-style magazines, and is the most versatile of the CMMG platforms, especially with the .22 LR, 5.7x28mm (Conversion), and 9mm conversions. NOTE: Requires charging handle, barrel, handguard, gas block, muzzle device, gas tube and BCG (Bolt Carrier Group) to complete.