Viperspeed 3" Thread Alignment Tool for M15X1RH

To be used with an M15X1 RH thread die also available in a different auction This is a simple TAT (thread alignment tool) for re-threading 7.62 caliber muzzles to accept the above M15 X 1 RH muzzle device. The extended 3" long stem helps with *Mosin-Nagant barrels which have been counter-bored to renew the muzzle crown.. It helps you get the die started level and on-center to prevent costly mistakes. * The Russian arsenal sometimes counter-bore the barrels to prolong their life by cutting out the bad/worn rifling at the muzzle end. If done properly a counter-bore has the potential to improve accuracy. The length of the counter-bore depended on how worn the muzzle end was. You should measure the depth of the counter-bore to make sure that this tool is long enough to reach the caliber bore of the rifle. MADE IN USA