Windham SRC M4 Profile Complete Upper Receiver Inch Barrel Assembly With Muzzle Brake .223/5.56mm

Sight Ready Carbine M4 barreled upper assembly. Sixteen inch M4 profile barrel is chrome lined and machined from 4150 Chrome Moly Vanadium steel - rifled 1 x 9” inch right hand twist - includes an A2 flash suppressor. A picatinny rail gas block with sling swivel and bayonet lug. M4 dual heat shield handguards. The machined aluminum flat top upper receiver is complete with bolt carrier assembly, charging handle, forward assist, and ejection port cover.