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AR-STONER AR-15 Optics Ready Upper Receiver Assembly 7.62x39mm 16″ Barrel



We are  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.

Product Information

Cartridge 7.62x39mm
Material Aluminum
Barrel Length 16 Inches
Twist 1:10″ Inches
Threads 5/8″-24
Barrel Contour Heavy
Sights No
Barrel Finish Matte Black
Chrome Lined No
Gas Block Diameter 0.75 Inches
Gas System Length Carbine
M4 Feed Ramps Yes
Upper Receiver Type A3 Flat-Top
Barrel Material 4140 Chrome Moly Steel
Handguard 2-Piece M4 Style
Bolt Carrier Assembly Included Yes
Muzzle Device A2 Flash Hider
Mil-Spec or Commercial Mil-Spec
Country of Origin United States of America
Compatible With


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