Have not yet test-fired this comp, which was part of a new assembly using an Adams Arms piston conversion kit for my ArmaLite M15A4. Bought this comp upon recommendation by Adams Arms customer rep. Installation is easy, but the peel washer / crush washer design is clumsy and rube goldberg to use. The individual shims did not easily separate or peel off, despite following the instructions. Recommend the peel washer be replaced with an ordinary crush washer and four to six separate thin shims to allow final orientation of the comp when torqued down.

Otherwise, a very nice looking comp. look forward to my first test fire outing

Thanks, Mike, Stafford, VA


Mike -

Thanks for the review. I agree that the peel washers are a pain in the butt, however we have found problems using crush washers. In our experience crush washers often don't flatten perfectly concentric and can reduce accuracy or shift point of impact. We don't advertise or guarantee this, but we have seen groups tighten up by using the X-Comp, and several customers have reported the same thing.

Thanks!

Tommy
Black Weapons Armory