Better than the best! - Yankee Hill Machine Specter Length Diamond Forearm AR-15 YHM-9637-DX

Bought one. Then bought another and another and yet, another. Have purchased two rifle length forearms, one spectre length, and one pistol length. Very rigid. I used a PRI barrel wrench (PRI #: 05-0082) and a 1/2 breaker bar to tighten per instructions. Used low profile gas blocks. The rail and upper then go into a jig to ensure alignment then I insert the anti rotations screws. Tighten the jam nut with a flat blade screwdriver and a light tap with a ball peen hammer. Fool proof. Exacting. Finish it out with the YHM end cap and some MAGPUL treatments. Buy it and be happy.