My Grendel Build.

[Stugotz]

Barrel upper fit was very tight. I ended up placing the barrel in the freezer for 24 hours before I inserted it into the Wilson upper. (I took a propane torch and carefully 'warmed' the barrel end of the receiver). It would have been an extremely difficult fit other wise. With reloads so far tis build is producing 7/8" - 5 shot groups off the bench. (This with the N-Vision HALO 50LR thermal). EXTREMELY pleased to say the least!