This rifle has a complete BCM MCMR 16 inch upper with a BCM bcg and an Aero ambi charging handle. The upper has less than 500 rounds through it and the bolt has less. The lower is an Aero ar15 gen 2 lower with slight damage to its left side top edge as seen in photo, but it does not affect fit and function. It Also has a radian raptor 45/90 safety selector, a Geissele SSA-E trigger, and comes fully decked out in BCM furniture including the foregrip. PMAG NOT INCLUDED. also has the BCM Mk2 recoil system which is the same as an A5 system. shoots great and always works, I just never shoot it and it collects dust. Feel free to ask questions about the rifle, I am firm on price and will only accept cash bills. No checks or money transfers.