Radial Bore Barrel Bushings for Gov't Models and Commmanders
To order - you need to know your Length (Gov't or Commander), Material - (Blue or S/S) and your barrel's O.D at the muzzle - (.579" or .580").
You will need to measure your barrel's O.D. (just behind the muzzle where the bushing sits when in battery) with a micrometer, or at least an accurate dial caliper. Then choose the bushing that you need!
See how the Radial Bore Bushing works