Rock River Arms Lower Parts Kits
Hi, are RRA lower parts kits any good? How is the fit and finish? Are they mil-spec? Have a chance to buy a couple of them just want to know. Another question, I buy parts from Specalized armament warehouse, they sell colt parts. They have a complete lower parts kit 0.155 semi auto. These are legal to install in a semi lower right? They are colt parts, but not cheap. How does the RRA Kit compare to the colt? Are the RRA kits the small pin 0.155? Thanks any advice will help. My stripped lower is a Kaiser Defense small pin. 0.155 Thanks any info will help me out.