Del-Ton AR Upper 5.56 MM
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Chrome moly vanadium M4 profile barrel with M4 feed ramps, 1:9 inch twist, A2 flash hider, manganese phosphated, phosphated under front sight base, taper pins on A2 front sight base and threaded muzzle. Phpsphated 8620 steel carrier assembly, carpenter 158 bolt HPT/MPI tested, heat treated and plated, mil-spec, chrome lined carrier interior, carrier key - chrome lined, attached with grade 8 screws. Properly staked and sealed gas key. Caring length handguard, aluminum delta ring and single heat shield. Forged 7075 T6 aluminum, A3 flat top with M4 feed ramps, hard coat anodized, mil-spec, ejection port cover and round forward assist, right hand ejection, bore's surface is coated with dry film lube over the anodized surface.