Need help with semi auto L4A4

[AmEngRifles]

I think that you are on the right path with the new locking shoulder installed and the bolt now closes on the go-gauge and will not close on the no-go gauge . I have seen a number of Len Savage's rewelded Bren guns with head space problems ,most all were corrected with the locking shoulder adjustments .

In response to this observation, I have had the SAME issues on guns that came directly from Historic Arms. What I don't get is how Len can build a gun and not have headspace set PERFECTLY, from his hands to the new owner?

I have an L4 that he stated had two barrels headspaced perfectly to the gun. When I got the gun, it was a bit different story. One will just take a No-Go, but works reliably. The other appears more " generous" and has given me case separations and feeding issues. It is frustrating to be told one thing, only to find reality is a bit different.

I hope you find an appropriate locking piece and resolve your issue. ,

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[tankhunter]

The question I would raise regarding Len Savages gauges then is: When were those gauges he uses, last calibrated?.......