Gunsmithing Pinning a muzzle brake

[Easy_E]

I have a barrel that needs a muzzle brake pinned to be legal length for a rifle . The barrel is an odd length but found a brake that's just long enough with a crush washer not torqued but might not make it torqued . If I make a spacer and add more length to be on the safe side will there be any issues with carbon build up or accuracy ?
Thanks

 

[Strykervet]

Probably won't be an issue since you have to time brakes and use shims anyway but any extra shimming = extra slop. I'm not so sure I'd use something like that for a suppressor mount but I don't see why it wouldn't work for a regular brake. Before SBR's were legalized here I blind pinned 2 AAC mounts, a flash hider and a flash hider/brake combo, on two LMT M4 barrels. They work fine for mounting and since the combo device had to be timed, it worked fine with the necessary shims. The hole was drilled in the end of the device underneath and just through the barrel threads, a drill rod inserted and expertly welded over.

There isn't a brake you can use that is of sufficient length as-is? Can't/don't wanna Form 1 that lower?

When blind pinning, make sure you have the shit on the barrel situated because you probably won't be able to make many changes later. It can be removed and redone, not ideal, but it's best not to do it at all if you can avoid it. If I could do it over, I'd just have Form 1'd those 2 M4's but I can understand the desire to do pin it.

 

[Easy_E]

There isn't a brake you can use that is of sufficient length as-is? Can't/don't wanna Form 1 that lower?

When blind pinning, make sure you have the shit on the barrel situated because you probably won't be able to make many changes later. It can be removed and redone, not ideal, but it's best not to do it at all if you can avoid it. If I could do it over, I'd just have Form 1'd those 2 M4's but I can understand the desire to do pin it.

We have a few uppers on form ones this is an extra upper that I would like to use on all lowers and Let the kids use . I put a bolt in the extension and measure with a dowel its right there without much torque and almost straight.
I figure making the right thickness spacer would look better and get the brake timed one or two threads further out.
I might be over thinking this just hate to have it all buttoned up permanent then have issues .

 

[DAVETOOLEY]

Are you measuring just the barrel or from the bolt face. Technically barrel length is measured from the bolt face.

 

[Easy_E]

Are you measuring just the barrel or from the bolt face. Technically barrel length is measured from the bolt face.

I put a bare bolt in the extension then put a dowel down the muzzle end and measured.

 

[DAVETOOLEY]

Then you have the correct measurement.