Barrel Stop - DI
This SKU has been discontinued and rolled into the BSU which can be used for DI or PCC setups.
This accessory limits the movement of the lock collar on your barrel when not mated with your upper.
Note: The barrel stop is not compatible with two-piece pinned aluminum lock collars (2016 production). Lock collars produced prior to [October 2017] will need modified by drilling three holes (template coming soon) to allow access for an Allen wrench. Your barrel profile must have at least 0.800” of flat surface with a diameter of 0.940-1.000” to install the barrel stop.
Installation instructions can be found on our resource page.