I bought a postban lower assembly and a preban M4 upper. This makes installation of the Wilson easy, just dimple the barrel threads for the set screw (about .030"), mount the brake and put a spot of weld over the screw. Buzz the bayo lug off and cold blue. Wilson will put the brake on a postban barrel for you for $80 (brake included). The Wilson is a great brake. It looks good, reduces sight disturbance during rapid fire, and works great in low light!
<font size=-1>[ This Message was edited by: DblTap on 2001-07-26 06:29 ]</font>