Im new to the AR scene but im wanting to pick up another. There is a guy in my area selling these. What do you guys think of the guns and the prices Thanks in advance guys! "I have 3 AR-15'S for sale - 18" upper one coyote fluted and one 18" hart with plumcrazy lowers and one 16" slickside DPMS. 750.00 for the 18" barrels 650.00 for the 16" barrel"