Uller Rear End Cap

Description

This cap threads into the rear of our Uller/Ullerson suppressors. This is what seals the first blast chamber of the suppressor against your barrel. This will NOT work on fluted barrels.

To order, please measure your barrel 4 inches behind the muzzle and enter the diameter to the nearest 0.01 inch, rounding down. Get as close as you can, but don’t stress about it. There is a high temperature O-ring that interfaces between the barrel and the cap that will compress to fill the opening. This measurement is best taken with a pair of calipers.