CMMG AR-15 Sierra A3 Flat-Top Upper Assembly 22 Long Rifle 1 in 16" Twist 16" Barrel WASP Melonite Finished Chrome Moly Matte with M4 Handguard, Flash Hider Pre-Ban
- AR-Stoner Magazine AR-15 223 Remington 30-Round Curved Body... $13.99 Available
- C Products Defense Magazine AR-15 223 Remington 10-Round with... $13.99 Available
- GoldenRod GunSaver Dehumidifier Rod 110v... $16.99 Select Options
- Magpul PMAG M2 MOE Magazine AR-15 223 Remington 30-Round... $12.30 Select Options
- Remington Barrel Seal Remington 1100, 11-87 12, 16, 20 Gauge... $7.09 Available
- Military Surplus Magazine Uzi 9mm Luger 32-Round Steel Black... $24.99 Available
- Kimber Guardian Angel Pepper Blaster II Pepper Spray Gel 10%... $39.99 Available
- TacStar Tactical Folding Vertical Forend Grip AR-15 Synthetic... $21.99 Available
- ERGO Mini Loader Tool 22 Long Rifle Magazines with Button... $2.60 Available
- Caldwell Resetting Target System 22 Caliber Rimfire Steel... $24.99 Available
- Lone Wolf Grip Plug Glock 17, 19, 22, 24, 31, 32, 34, 35, 37,... $6.29 Available
- 5ive Star Gear Mil-Spec P-38 Can Opener Stainless Steel... $0.99 Available
CMMG's Sierra 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 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.
The Sierra upper is ready to drop on to any standard mil-spec lower receiver, all that's needed are a compatible magazine and a pile of 22 LR ammunition to start enjoying some inexpensive and fun time at the range! Compatible with Black Dog Machine and CMMG rimfire AR-15 magazines (not included). CMMG recommends the use of Plated 40 grain High Velocity 22 LR ammunition for optimal functioning.
- Upper Receiver: A3 Flat-Top w/Ceramic Finish
- Barrel Length: 16"
- Barrel Contour: M4
- 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
- Muzzle Device: A1 Flash Hider
- Gas System Length: None, Blowback
- Gas Block Diameter: 0.750"
- Handguard: Polymer M4-Style
- Sights: None, Single Rail Gas Block/Front Sight Base
- Extras: Gas Deflector, Anti-Jam Charging Handle, Non-Functional Forward Assist Plug, Live Round Extraction
- Magazine Not Included, Compatible w/Black Dog Machine & CMMG Magazines