Alg trigger. Troy battle rail mag pull sights kak brace. It also has a super heavy duty, thick barrel   PSA upper and lower It will come with a brown one and a mag pole pistol grip not the B5 one shown Or I will simply trade uppers. I'm looking for a old school car 15 style upper something that just looks M4 ish. Doesn't have to have a rail system Can be anywhere from 10 1/2 to 16 inches if we trade uppers, I can include the flip up sites. The Troy battle rail And the fake suppressor barrel extension