CMMG's Evolution Series of rimfire uppers feature many significant improvements over previous generations to enhance their functionality, reliability, and ease of use. Prominent among these improvements are a polymer anti-jam charging handle, live round extraction ability, and the integration of a gas deflector. CMMG's extremely durable Weapons Armament Surface Protection (WASP) Melonite finish has been applied to protect the barrel from corrosion. This proprietary treatment surface-hardens the steel, extending the barrel's service life by reducing friction inside the bore, resulting in less bore surface wear over time.
- Upper Receiver: A3 Flat-Top
- Barrel Length: 16"
- Barrel Contour: M4
- Barrel Material: 4140 Chrome Moly Steel
- Muzzle Thread Pattern: 1/2"-28
- Chrome Lined: No
- Barrel Finish: WASP Melonite / Black Nitride
- Twist Rate: 1 in 16"
- Chamber: 22 Long Rifle
- M4 Feed Ramps: N/A
- Muzzle Device: A1 Flash Hider
- Gas System Length: None, Blowback
- Gas Block Diameter: 0.750"
- Handguard: Revolution Modular Rail, Free Float, Carbine Length
- Sights: F-Marked Fixed Front, No Rear
- Extras: Gas Deflector, Anti-Jam Charging Handle, 3 Modular Rail Panels (5-Slot), Non-Functional Forward Assist Plug
- Additional Info: Magazine Not Included, Compatible w/Black Dog Machine & CMMG Rimfire Magazines