So I have this canted gas block...

AR/M4 AR Technical Discussion
1

Am I going to have a problem as well?

The gas tube enters the upper at a very slight angle, but I can’t feel any drag on the carrier key. The gas block is pinned and the barrel is dimpled for the set screws, so I can’t really move the gas block around at all.

Should I just shoot the upper and fix the issue only if the rifle malfunctions? Or am I looking at introducing a long term problem by leaving everything as-is? I’m shooting 6.8SPC and plan to run my hot handloads through the barrel (Ko-tonics, so it’s OK).

Here are pics of the complete rifle and the gas block:


2

I wonder if you couldn’t just bend the gas tube just enough to route it straight into the key??? :confused:

3

It doesn’t look all that bad to me. You should be able to drive the pin out and and reset the GB though.

C4

4

Well, the pin intersects the barrel like the taper pins on a standard FSB. There’s just no way to reset the GB unless I have someone fill in the barrel and redrill the hole.

If it’s no big deal, I’ll just leave it alone.

5

Having installed many a pinned GB, there is actually some play here. My suggestion would be to at least try and see if you can move the GB a little (which is all you need).

C4

6

Will do.

Thanks, Grant.