Semi Auto Bren extract problem

[locchau]

Again, thank you all for all of the help and in formations that you all provided. I just took some pictures of the bolt face and inside of the receiver. I have removed the striker spring and with just the recoil spring, it is so much easy to pull the bolt carrier back. It is much stiffer with the striker spring in place. I also find that there is very little biding on the carrier with the semi auto welded to prevent original carrier to be install on the side of the receiver, I am dremeling it to smooth it out (stoning and polish) a little at a time. I have made a short video of the binding, hope it come out ok. Joe, I’ll check the barrel and exit port from work tomorrow. The machine shop guy is cool and he also on gun stuffs. Vincent, Yes I use the same breech lock for both and its look like the bolt is enlarge for 7.62X54r. Mr. E it is much stiffer than an FAL with the striker spring installed. I ordered the MK2 recoil spring from BRP Corp Store today, will get it sometime next week. Where can I find a lighter recoil spring? Is it ok to use different striker spring since my striker hole is for the large diameter spring. I took Mr Laidler advice, but instead of Scotch that he recommended I used Heineken and Cognac and they are kicking my a** now. I’ll be dreaming and hope this gun will be working soon, you all have a good night.

PS. The regulators are different on two barrel, my guess is one for MK2 (the short one) the the other is MK?. will they work on my gun?

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[Joe H]

I ordered the MK2 recoil spring from BRP Corp Store today, will get it sometime next week. Where can I find a lighter recoil spring?

locchau,

IMO I wouldn't be looking for a lighter recoil spring. I wouldn't use any less than the standard double recoil spring .

Joe

[locchau]

Joe,
I meant striker spring and not recoil spring, words seem leaving after few beers. The little binding as I mention on last thread, turn out much worse than I thought it was. After let my machine shop friend examining it, the problem from the receiver gas tube not straight and he said not by much and can easily fix with a new carrier. I got the measurement as you mention on your last threat below. When you drill your Regulator hole, did you use drill bit or end mill bit? The reason I am asking because I do not have tool to heat it up to 1600 Deg F.
Gas Regulator # 4 port: .148
Barrel hole: .149
Gas block exit: .161
Piston: 0.625"
About the Gas regulator, I have a long and a short one. Are they both working the same way? If not which one is the correct one for MK2 Bren? I am ordering a new carrier and MK2 recoil spring, any idea on the striker spring? Should I get a lighter one or use it for now after sorting all of the binding issue.
Loc Chau