Barrel - 16" 416 stainless steel bull contour barrel. . Chambered in 5.56 nato (also accepts .223 rounds). 1-9 rh twist 6 groove button rifled. .936 under gas block. Spiral fluted. Target crowned. M4 feedramps. A3 flat top upper reciever - 7075-t6 aluminum forgings. White "t-marks" on rails. Forward assist and dust cover installed. Gas system - single top rail gas block made from aircraft quality aluminum and black hardcoat anodized. Carbine length gas tube. Handguards - free floating quad rail . Aircraft quality aluminum and black hardcoat anodized lower - Mohawk Armory Model M-15. 7075 t-6 aluminum adjustable 6 - position adj. stock.. (scope is negotiable). Will trade for Handguns or Bolt Action Rifle.