Your 556 Complete Upper can be customized with a matched optic, muzzle device, rail, bolt carrier group, magazine, or charging handle. Our 556 Upper Receivers are turn-key and ready to shoot out of the box. 556 NATO (5.56x45mm) is the ammunition used by the standard-issue US Military M4, making it inexpensive and widely available.
223/5.56 NATO Chamber---Forged A2Upper Receiver---20" Wilson Chrome Moly HBAR Barrel 1:9 Twist A2 Handguard---A2 Flash Hider Substitute a Wilson Air Gauged Stainless Steel 1:8 Twist Barrel for a minor additional charge. Standard A2CompleteUpper: CALL
Bushmaster designs and manufactures premium upper receivers for the AR rifle / pistol platforms. These durable uppers are the perfect item to build your AR firearm around. Bushmaster has you covered on your next AR build or upgrading project chambered in 5.56mm, .300 Blackout, or 7.62mm. Choose from stripped uppers, completeuppers, and completeuppers with barrel and other components ready to go.
Please view details for more information. 20'' 5.56 Lightweight .625 1x9 Moly Phosphate Stripped Barrel. Our Price: $135.00. Quantity: * Whole number only. Sorry we are currently sold out. Please view details for more information. 20'' 5.56 Lightweight .625
Please view details for more information. 20'' 5.56 Lightweight .625 1x9 Moly Phosphate Stripped Barrel. Our Price: $135.00. Quantity: * Whole number only. Sorry we are currently sold out. Please view details for more information. 20'' 5.56 Lightweight .625
