Semi Auto Bren extract problem

[scoobsean]

I would use the striker spring that you have. It looks good from your photos. My gun came with a worn striker spring that was crushed in a few places. It did not have enough power to push the striker hard enough and I was getting light primer strikes. If you put in a softer spring you might also have light primer strikes too. Only change one thing at a time.

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[Joe H]

Only change one thing at a time.

locchau,

Take Scoobsean's advice : fix one thing at a time, locate and solve the binding problem. I'm having a hard time imagining what would be wrong with the bolt carrier that would need replacement.

Whatever the problem with the tube or carrier, get it fixed first then try it out. That may be the only problem. If not decide where to go next.

I never realized there was a height difference in the regulators. As far as I know all the MK regulators are interchangeable.

As far as the regulator, I used regular HSS drill bits. HSS will work on the barrel hole and exit hole. The regulator is very hard. If you are only doing one hole you may try a carbide drill bit. It has to be lined up properly. Working with small tooling in hard material is always a problem, you break one or two bits before you learn the right technique. Don't mess with the gas system if you don't have to. Consult your machine shop friend before you do any drilling.

Joe