M4 5.56 Heavy Barrel Upper Receiver 16 Inch Flat Top Tonys Custom Upper
These 16" M-4 style Upper Halves feature an extra heavy 4140 Chrome-Moly barrel. Includes a forged and hard coat anodized A3 upper receiver with flat top, ejection port cover, forward assist, a rear sight, M4 feed ramps and a 1 in 9 twist. Pre-ban. Includes a flashider and a bayonet lug. No FFL required. Easy installation--remove 2 pins, insert upper and replace pins.
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