Good for budget build. one wrong part - Tactical Superiority AR-10 Lower Parts Kit A2 Black Grip, .308

This was a good cheap parts kit. I only had one issue. The magazine catch that came with the kit was a ar-15 catch and not an ar-10. It would not engage the bolt on an empty mag, and would bairly hold it if I manually set the bolt catch. Even then it wouldn't hold the bolt long, and would slam closed on it's own without hitting the bolt release. I ordered an aero precision ar-308 bolt catch and it works like a charm now. Sucks that I had to spend an extra $15 on a bolt catch, but it was still cheaper than most other kits.