Aero precision quad rail - Aero Precision AR15 Gen 2 Enhanced Quad Rail Handguard

This rail is a great fit on my pistol project. It fits nicely and aligns with the top rail well. The rail was a little longer than the 9" length but this is to be expected with most (if not all) free-float rails. I had to buy a BAR barrel nut as this did not include one however it wasn't an issue since I got a great deal on the rail itself. Timing the nut was relatively easy and included simply pre-stretching the threads at 30ft-lbs three times. Once that was done, I placed all of the shims on and timed it perfectly at 30ft-lbs