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.
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