Alignment Collar for the MRS/LRS Suppressors ensures alignment and concentricity to the bore. Simple installation, slide on the barrel, install the MRS or LRS Suppressor contacting the collar. Tighten the set screw to lock it into place.
NOTE: Alignment Collar (Long) barrels need a .700X.700 step in the profile at the muzzle.
NOTE: Alignment Collar (Short) for use 7.5" and 10.5" barrels without enough clearance for the standard alignment collar.