Installing set screw gas block on pinned barrel??

[maroonandwhite]

I am installing a set screw type gas block on my previously pinned barrel and it looks like the rear most set screw will land very close to the rear pin channel. Have any of you ran in to this? I am thinking i will just drill a dimple for the front set screw and just tighten the rear on up snug with plenty of loctite.

[maroonandwhite]

Link to the gas block I have coming.

 

http://www.ebay.com/itm/251665088639?_trksid=p2060353.m2749.l2648&ssPageName=STRK%3AMEBIDX%3AIT

[Clod Stomper]

I haven't ran into that, but it sounds to me like that would work. I would tighten up the front screw first.

[maroonandwhite]

Yeah it may not hit the pin channel but I think it'll be too close to try to drill a dimple. I just don't want it to try to "walk" in the pin channel when tightening. We will see tonight.


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[Troutburger]

If it walks into the pin channel, could you use a longer set screw?

[maroonandwhite]

If it walks into the pin channel, could you use a longer set screw?

I'm sure I could . Guess I would just have to drill out that portion of the channel.

 

Kind of wishing I would have just bought a clamp on now...

[maroonandwhite]

Just got it in. Here's what I'm dealing with.


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[maroonandwhite]

Also with the gas block pushed all the way back to the neck the gas port lines up right in the middle of the hole so sliding it forwards any won't work. I just don't see any way I'll ever get a straight indention drilled there. Hopefully the front screw will be plenty to hold it. The good news is that it doesn't look like it will "walk" into the pin channel.

[raildog]

You could try too dimple it with a center cut end mill in a milling machine. I would be willing to give it a try if you want to bring it to me

[maroonandwhite]

You could try too dimple it with a center cut end mill in a milling machine. I would be willing to give it a try if you want to bring it to me

 

Thanks for the offer. I just went ahead and tried it with the drill press. Didn't really work out how I wanted but it did put a little dimple in the barrel. More or less just scratched it a little haha. I just went ahead and installed it as I have seen plenty of folks that didn't dimple theirs with no issues. I used loctite on the mating surface as well as the set screws. I'll let that set up for a few days and see what happens. Here's a few pics of the finished product. The cheap rail seems like it's going to work well and seems to lock up tight. I have to figure out a way to get that lock nut a little tighter though so the rail doesn't twist.

[maroonandwhite]

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[Static_USMC]

You could also epoxy the old pin in and trim it flush. Then put gas block over it. I have done it on a couple builds.

[maroonandwhite]

You could also epoxy the old pin in and trim it flush. Then put gas block over it. I have done it on a couple builds.

Not a bad idea there. I put 100 rounds through it this weekend with no issues though so I think it's good. If I have any issues with it I'll try that.