Aero precision enhanced carbine buffer - Aero Precision Enhanced Carbine Buffer Kit

I was putting together some lower build kits for future use and came across this buffer kit on sale. When I received it and doing my inspection I was impressed with the quality fit of each piece. While installing the tube on a stripped lower receiver the feel of the threads was smooth with no excessive play or looseness. The Castle Nut was able to screw onto the tube with no binding but I noted it screwed onto the tube a bit further allowing the optimal distance into the lower for the detent alignment given this tube has the extra protrusion for the detent pin to lock preventing accidental rotation if the nut comes loose. I could go on and on with each detail but the short version is I liked it so well I bought another before it went off sale, would have probably bought one even if it wasn't.