Thread: Stag 9T 9mm

Broken bolt stops can be cured by putting a steel shim washer in the front of the stop to make it a snug fit in the receiver and prevent twisting when the bolt makes contact. I would also recommend having a new stop machined from solid steel and properly heat-treated for toughness, rather than use the replacement investment-cast ones. Investment casting is a quick and economical way to make acceptable parts, but is still not as good as properly made (albeit slower and more expensive) parts.

Originally Posted by gundoc

Broken bolt stops can be cured by putting a steel shim washer in the front of the stop to make it a snug fit in the receiver and prevent twisting when the bolt makes contact. I would also recommend having a new stop machined from solid steel and properly heat-treated for toughness, rather than use the replacement investment-cast ones. Investment casting is a quick and economical way to make acceptable parts, but is still not as good as properly made (albeit slower and more expensive) parts.

Hi Gundoc.
NZGUNS are still working on a billet bolt lock for me. A tough ask.
I will look at a shim. The clearances certainly don’t help the issue.
In the mean time they keep suppling the investment cast versions. Think 6 so far. Lost count.
They are also getting a heavier buffer manufactured for me currently.
This is all under warranty so they do stand behind the gear.