.525" to .530"
Hi ChuckOriginally posted by pistolwrench:
The bushing 'skirt', the .703" diameter should not exceed .440" in length.
Also the barrel must be turned to .570" -.580" to within .020" of the forward locking lug.
The rear of the bushing skirt must never make contact with the barrel lug area.
Hope this helps,
Chuck