Traded a gun and some cash for this today... I am new to AR's, so I really am not sure what all I have yet. It's a Colt Match Target Competition HBAR 20" barrel with a Surefire rail, Leupold Mark 4 scope and a TDI bipod. Has a flash suppressor that is hiding the twist that is wrote on the barrel. I believe it's a 1 in 9 tho. Anybody have any good info / links on this type of AR? Value? I got it at a really good price from a really good friend! I am really getting into this AR stuff, so any tips on factory ammo for this setup, improvements that I could make etc.. would be greatly appreciated!