Armalite upper receiver with a 1:8 twist CR-MO barrel carbine length Quad rail Magpul angled grip Full auto BCG MP stamped Aero M4E1 lower CMC lpk Magpul grip UTG A2 Fixed stock Also has a Bayonet for it i can throw in Odessa Texas 726-245-4075 Rifle runs very well and extremely solid especially for long range targets , located in Odessa Texas