CMMG's Evolution Series of rimfire uppers feature many significant improvements over previous designs, enhancing functionality, reliability, and ease of use. Prominent among these improvements are an Anti-Jam Charging Handle, Live Round Extraction ability, and Polymer Gas Deflector. CMMG's durable Weapons Armament Surface Protection (WASP) Melonite treatment has been applied to the barrel and surface-hardens the steel, extending barrel service life by reducing friction in the bore and lessening bore surface wear.
- Upper Receiver: A3 w/Ceramic Finish
- Barrel Lenght: 20"
- Barrel Contour: Government
- Barrel Material: Chrome Moly Steel
- Muzzle Thread Pattern: 1/2"-28
- Chrome Lined: No
- Barrel Finish: WASP Melonite
- Twist Rate: 1 in 16"
- Chamber: 22 Long Rifle
- M4 Feed Ramps: No
- Muzzle Device: A1 Flash Hider
- Gas System Length: None, Blowback
- Gas Block Diameter: 0.750"
- Handguard: 2 Piece Polymer, Rifle Length
- Sights: A2 Front Sight, No Rear
- Extras: Gas Deflector, Anti-Jam Charging Handle, Non-Functional Forward Assist Plug
- Compatible w/ Black Dog Machine & CMMG Rimfire Magazines (Not Included)
Please Note: Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.