This is a dedicated threading system for the Swiss K31 rifle. Full instructions are included for this 14mmx1 system and it is virtually fool proof. Kit includes the 14mmx1 threading die, collet, handles and bore pilot. The kit is designed to thread K-31 muzzles to accept the St. Marie/Swiss Products Barrel Damper and the Muzzle Break, both sold separately.
Be the first to review this product! You'll be the talk of the town.