| As I recall the original bolt was .254".and I tapped the hole to 5/16,either 18 or 24 threads,probably 24.I set the gun in a drillpress vice and leveled it and started the tap with no power on the press,torning the chuck by hand.I used air to keep the hole clean and used a finish tap to finish the threads.Then I rounded the head of the bolt,cut the slot and cut to length by feel.(tryal and error)I cold blued the bolt which I never liked but this was on a custom rifle in .308win and it has been there,very easy to remove and reinstall ever since.The trouble with the coil spring which I have used is it limits taking the stock off.Forgot to add,you must bore the trigger guard hole larger,not the recess,just the hole. sam. |