I had the Dayton Traister kit put in mine. The gunsmith who did the work was a very accomplished 'smith and he admitted that it was much more difficult than he thought it would be. I wound up with that cock on opening kit, stock glass bedded, and barrel recrowned in search of some of the accuracy this rifle and caliber were supposed to be capable of. The rifle would shoot itty-bitty groups with the plain jane Winchester Super-X 140 grain PSP. I tried to find an accurate handload for the 140 grain Partition without success until I pulled all my hair out and set the lugs back on the bolt. Rifle is now out of state at a gunsmiths for repair.