MidwayUSA is proud to offer this AR-STONER™ Optics Ready Upper Receiver Assembly at an exceptional price! This AR-STONER™ carbine length upper features a mil-spec bolt carrier group, phosphate finish, low-profile gas block, and a heavy profile barrel. The A3 upper will attach to virtually any standard AR-15 lower receiver and comes complete with charging handle, forward assist, ejection port cover, bolt and bolt carrier assembly. This Optics Ready upper does not include a front or rear sight, and utilizes a low profile, non-railed gas block, making it a great platform for a red dot or scope (sold separately).

Technical Information

• Upper Receiver: A3 Flat-Top
• Barrel Length: 16″
• Barrel Contour: Heavy
• Barrel Material: 4140 Chrome Moly Steel
• Muzzle Thread Pattern: 5/8″-24
• Chrome Lined: No
• Barrel Finish: Matte Black
• Twist Rate: 1 in 10″
• Chamber: 7.62x39mm
• M4 Feed Ramps: Yes
• Muzzle Device: A2 Flash Hider
• Gas System Length: Carbine
• Gas Block Diameter: 0.750″
• Handguard: 2-Piece M4 Style
• Sights: None
• Bolt Carrier Group Included: Yes
• Bolt Carrier Type: Mil-Spec

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.