Windham Weaponry UR16M4A4B Complete AR-15 Upper 223/5.56 16 in 4150 Steel M4 Blk
This M4 Barreled Upper Assembly is complete and ready to snap onto your Lower. The highly accurate 16 M4 profile barrel is chrome lined and machined from 4150 Chrome Moly Vanadium steel - rifled 1 x 9 Right Hand twist. An A2 Flash Suppressor and standard A2 Front Sight are fitted. The machined aluminum flat top Upper Receiver is complete with Bolt Carrier Assembly, Charging Handle, Forward Assist, Ejection Port Cover, and Removable A4 Carry Handle with 300 - 600 meter Dual Aperture Rear Sight.
SPECIFICATIONS:
Mfg Item Num: UR16M4A4B
Category: UPPERS
Type :Complete Gas Impingement
Caliber :223 Remington/5.56 NATO
Sights :A2 Front, Removeable A4 Carry Handle
Barrel Length :16 in
Barrel Material :4150 Steel
Twist :1:9
Barrel Description :M4 Profile
Barrel Finish :Black
Receiver Description:A3
Receiver Finish :Black