Rock River Arms AR-15 Mid-Length A4 .223 16" Complete Upper Receiver
Rock River Arms Mid-Length A4 complete upper features a 16" chrome lined 1:9 twist barrel, A2 Flash Suppressor, complete bolt assembly and charging handle and a .223/5.56 NATO Chamber. No FFL required.
Discontinued by manufacturer-Sig Sauer Trigger Bar Spring - P226, P228, P229 Old Style
Out of stock