Project AFAR

[robertc1024]

I think Todd'd idea about running the AFAR BCG in yours is a good idea. I'd also tweak the alignment of the gas block with the blow test. You can blow through the gas tube until you get maximum flow, then clamp it down there. If something is plugged totally, it would test that too. It wouldn't tell you if something is restricting the flow though.

 

[EZ-E]

I say try gas block alignment issues or leaking.

Also may consider buffer spring...if it hasent been tried. If its too weak from being used that could cause issues with the bolt feeding/ejecting.

 

[Dad_Roman]

I say try gas block alignment issues or leaking.

Also may consider buffer spring...if it hasent been tried. If its too weak from being used that could cause issues with the bolt feeding/ejecting.

Put the entire buffer unit off Dustins rifle cause we knew it worked.

When we discovered the chewed up buffer and the butchered buffer tube we took that step.

 

[EZ-E]

Ahhh...gas block would be my guess. It seems every possible part other than gas block has been tried. Its either leaking because its 2 piece or misaligned.

 

[Dad_Roman]

Ahhh...gas block would be my guess. It seems every possible part other than gas block has been tried. Its either leaking because its 2 piece or misaligned.

Yea, us too. Weird clamp on type, never seen one before. One piece with a big gap and two pretty good sized allen screws to bind it together. Thought I had it tight and was careful with tightening it but for alignment I just slammed it up against the shoulder on the barrel. If the hole is "off" a little bit then it wont be lined up proper.

Should've marked it and checked that like Todd mentioned above.

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[CyberWolf]

Yea, us too. Weird clamp on type, never seen one before. One piece with a big gap and two pretty good sized allen screws to bind it together. Thought I had it tight and was careful with tightening it but for alignment I just slammed it up against the shoulder on the barrel. If the hole is "off" a little bit then it wont be lined up proper.

Should've marked it and checked that like Todd mentioned above.

^Late to the thread and haven't read all posts, but that's almost certainly the issue (bolded part).

With most blocks it seems, there needs to be a space between the rear of the block and the shoulder on the barrel. Seem to remember it being about .030, but recommend measuring to be sure to account for variances between mfg.

Also, I've used the clamp-on style in a few builds (not sure which one was used here); they work great as long as indexed properly.

 

[Dad_Roman]

^Late to the thread and haven't read all posts, but that's almost certainly the issue (bolded part).

With most blocks it seems, there needs to be a space between the rear of the block and the shoulder on the barrel. Seem to remember it being about .030, but recommend measuring to be sure to account for variances between mfg.

Also, I've used the clamp-on style in a few builds (not sure which one was used here); they work great as long as indexed properly.

Yea shoot. .030 is a LOT. I also didnt feel confident in the assembly when I finished because of this. I should have gone back and marked the gas block to insure alignment.
We got hung up on having the wrong length gas tube and it cost me a lot of time that would have normally been devoted to such details.

Good info....thanks

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[vmax]

I think Todd'd idea about running the AFAR BCG in yours is a good idea. ...

I just dont see the reason for doing that
I put my BCG out of my good gun in the AFAR with the AFAR upper and it failed.

 

[easy rider]

I just dont see the reason for doing that
I put my BCG out of my good gun in the AFAR with the AFAR upper and it failed.

Yeah, I can't remember if we used the BCG I had brought or not, but I know it worked fine in my 5.56 before I upgraded.

 

[SQLGeek]

I'm going with gas block as well.

 

[toddnjoyce]

I just dont see the reason for doing that
I put my BCG out of my good gun in the AFAR with the AFAR upper and it failed.

I tend to eliminate variables when troubleshooting. I’ll admit running the AFAR BCG in a known good rifle is a bit of belt and suspenders, it can let you know that leakage or other issues with the AFAR BCG aren’t compounding the problem.

You’ve already done half the equation by running your known good BCG through AFAR and that’s probably good enough to indicate that the problem most likely lies upstream of the BCG in the gas system.

 

[TxStetson]

I think you should swap the BCG’s and fire both rifles. Then swap them back just for shits and giggles. Then take that POS gas block off of there. I think Ez-E kept all the spares we had there but they’re cheap.

 

[outdare]

Like some of the others said. Use compressed air and blow through the gas tube. You should feel the air coming out the barrel.

Sent from my moto x4 using Tapatalk

 

[Davetex]

BCG was mine. It ran well in the rifle I took it out of, I only swapped it out because I bought a chrome BCG.
Also, it had very little use, it''s as good as new.

 

[vmax]

BCG was mine. It ran well in the rifle I took it out of, I only swapped it out because I bought a chrome BCG.
Also, it had very little use, it''s as good as new.

True
I looked it over good and striped it down
Gas rings and key are perfect
It is not the problem

 

[TxStetson]

BCG was mine. It ran well in the rifle I took it out of, I only swapped it out because I bought a chrome BCG.
Also, it had very little use, it''s as good as new.

I didn’t mean anything by my comment. I was just busting @vmax ’s chops. I know that Komifornia Compliant AR is getting under his skin.

 

[Davetex]

I didn’t mean anything by my comment. I was just busting @vmax ’s chops. I know that Komifornia Compliant AR is getting under his skin.

I know, my comment wasn't a response to yours. I was just saying what I knew or something.

 

[vmax]

We have a working rifle now!

I put the EOTECH on that @Moonpie sent me early on, and cant believe the luck...it is so close to on that you could hit a softball at 30 yards.

So I'm gonna let the Airman enjoy dialing it in when we present it to him in January
Thanks to all!!

@Dad_Roman

 

[BRD@66]

We have a working rifle now!

I put the EOTECH on that @Moonpie sent me early on, and cant believe the luck...it is so close to on that you could hit a softball at 30 yards.

So I'm gonna let the Airman enjoy dialing it in when we present it to him in January
Thanks to all!!

@Dad_Roman

Yessss!

 

[Dad_Roman]

We have a working rifle now!

I put the EOTECH on that @Moonpie sent me early on, and cant believe the luck...it is so close to on that you could hit a softball at 30 yards.

So I'm gonna let the Airman enjoy dialing it in when we present it to him in January
Thanks to all!!

@Dad_Roman

I think that sums it up.....Yessssssss.

Thanks for stickin with it. Got a real live gun now!

To all those involved in the project, Thank You. We have achieved Nirvana!

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