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Change hand guards on they AR.... #6152722 01/25/16 01:29 AM
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Now it won't cycle. I've run the piston and gas block correct, at least I think so. Is there something I'm missing?

Re: Change hand guards on they AR.... [Re: TCB] #6152731 01/25/16 01:33 AM
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Did you remove or move the gas tube? If it's not sitting inside the bolt it won't have the gas to cycle. It's going to be hard to figure out the problem without putting hands on it

Re: Change hand guards on they AR.... [Re: TCB] #6152734 01/25/16 01:33 AM
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What all did you have to do to swap them out? Gas tube or block is probably mis-aligned.


Originally Posted by unclebubba
Just to make sure that it is done thoroughly, I go both ways.

Re: Change hand guards on they AR.... [Re: TCB] #6152736 01/25/16 01:34 AM
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Just realized you said piston. I'm not familiar enough with those to help, been a long time since I owned a piston rifle

Re: Change hand guards on they AR.... [Re: TCB] #6152741 01/25/16 01:35 AM
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Gas block alignment.


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Re: Change hand guards on they AR.... [Re: TCB] #6152794 01/25/16 01:56 AM
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Gas block alignment may have off. I was able to pull the hand guard and gas block down another 1/8" which should have the gas block lined up.

Re: Change hand guards on they AR.... [Re: TCB] #6152908 01/25/16 02:49 AM
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If your's is a set screw gas block, remove the set screw closest to receiver, there is normally an indention on the underside of barrel, align the set screw hole with indention then insert set screw tighten and should be good to go.


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