AR15 sticky bolt...

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Load a round, decide to not fire it. Put safety on, remove mag and go to pull back the charging handle.... no joy. Really hard to pull back, no luck. Pull even harder it finally goes.

What would be the cause of this?
 

titsonritz

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I cleaned it and relubed, same prob. Will check obstructed chamber... but for what or how? It will chamber and fire...
Could be a sliver of brass wedged on the chamber wall.
Was it working fine before and just starting having the issue or is this a new build and has been doing from the start? If it the latter case I'd say out of spec chamber.
 
OP
Koda
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Could be a sliver of brass wedged on the chamber wall.
Was it working fine before and just starting having the issue or is this a new build and has been doing from the start? If it the latter case I'd say out of spec chamber.
I cant see anything with the bolt removed. I cleaned it with a chamber brush too.... I dont think anythings in the chamber.
Cycling it seems to happen only with Aquila ammo. Everything else is smooth as silk. Built it in 16 and never had issues.
 
OP
Koda
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From what I've read harden arms have had alot of quality control issues!!!
would love any links on them, cant find anything on them anymore now they are out of business. Back then they were fairly new, a scant mention on this forum and a few happy customers. Im pretty convinced now its the Aquila ammo, maybe it has a tigher chamber IDK...
 
Weird, a Mil Spec Chamber should feed everything; clean, dirty, rusty, shellacked, frozen, or otherwise not clean and fresh! I usually try not to feed them crap ammo, but I do want to know that they will run on it if I was forced to use it for what ever reason! Maybe this was a learning experience for you while things are still pre-SHTF! Might be hard to find a decent Mil Spec Barrel right now, but i'm sure if you look hard enough, you should be golden!

I hate to say it, even though it is likely the ammo at issue here, it does point to an issue with your rifle for the purpose you intend it for, and that means it's gonna need some work!
 

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