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Suggestions on a BCG malfunction?

 
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  #1  
Old 03-12-2013, 08:32 PM
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Join Date: Jan 2012
Posts: 61
Suggestions on a BCG malfunction?

I bought a Fulton Armory chrome BC and my bolt won't cycle. It seems to get stuck and not unlock. I know the gas system is right and my bolt is mil-spec. The rifle works with other bolts. The problem is FA shut off their phones and won't answer any of my emails. Do you guys have any suggestions? It's really a pain because everything else is finished on this build, but carriers seem to be out of stock or way overpriced everywhere you look. Sorry for the ramble, but your thoughts on the matter are appreciated. Thanks.
-JA
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  #2  
Old 03-13-2013, 07:27 AM
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Location: SOCIALIST CONTROLLED TERRITORY OF NEW YORK
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Re: Suggestions on a BCG malfunction?

Quote:
Originally Posted by BigAndy View Post
I bought a Fulton Armory chrome BC and my bolt won't cycle. It seems to get stuck and not unlock. I know the gas system is right and my bolt is mil-spec. The rifle works with other bolts. The problem is FA shut off their phones and won't answer any of my emails. Do you guys have any suggestions? It's really a pain because everything else is finished on this build, but carriers seem to be out of stock or way overpriced everywhere you look. Sorry for the ramble, but your thoughts on the matter are appreciated. Thanks.
-JA
Its not mil spec, that's just advertising. Is your lower and older colt by any chance? You most likely have some thing up in the barrel recess. If its not a colt lower and your sure every thing is where is supposed to be? Then shotgun that weapon!

Grab it like you going to butt stroke some one and slam the butt stock into the ground until the bolt comes free! I had this happen in a no **** situation once and believe you me it will work!
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  #3  
Old 03-13-2013, 08:25 AM
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Join Date: May 2009
Location: roanoke,va.
Posts: 235
Re: Suggestions on a BCG malfunction?

I had a similar problem with another brand. I found another thing could cause the lock up. Reloading with a too long bullet. Or, just a bullet seated too far out.
Did your bolt fully close and were you able to fire the round? If not, it very well could be a long bullet running hard into the lands causing the bolt to not go fully home and then... it's stuck. That's easy to find; just run a round home and try to extract it without firing. If you can, that probably ain't it. Do it again and try to fire it. If it didn't go fully into battery, it shouldn't fire. Then ..I don't know.
Icanhithimman is correct; and it won't hurt the stock to do it either. I like to put my foot on the charging handle release and then lift the rifle and punch it into the ground, butt first. Your foot will add pressure to the bolt and it will open. Maybe not the first time, but it will open. Won't fire, but still keep yer head out of the way. This way isn't as shocking to scopes.
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  #4  
Old 03-13-2013, 08:53 AM
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Join Date: Jan 2012
Posts: 61
Re: Suggestions on a BCG malfunction?

The rifle does fire every time, but just doesn't cycle. I essentially built a bolt action AR. The charging handle is hard as anything to pull back after the round fires. The lower is a DelTon and the upper is a DPMS lo-pro. I added a DPMS Mark 12 barrel with a free-float tube (screw-on, not clip-in). Next range trip, I will slam the buttstock as mentioned above. Thanks again fellas.
-JA
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  #5  
Old 03-13-2013, 11:55 AM
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Join Date: Sep 2009
Location: South Dakota
Posts: 416
Re: Suggestions on a BCG malfunction?

That sounds like more of a gas problem than anything. The reason it's hard to extract the spent round after it DOES NOT eject, is because it expanded in the chamber without rearward extraction at the same time.
Pivotal for proper extraction.
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  #6  
Old 03-13-2013, 12:18 PM
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Join Date: Jan 2012
Posts: 61
Re: Suggestions on a BCG malfunction?

I guess I will double-check the BCG key/gas tube alignment tonight.
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  #7  
Old 03-13-2013, 02:07 PM
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Join Date: Jul 2007
Location: SW Wisconsin
Posts: 222
Re: Suggestions on a BCG malfunction?

Did you just replace the carrier, or the bolt and carrier? Not sure on FA, but some of the chrome plated carriers start as standard carriers, then are plated so their dimensions may be a bit larger than a standard one. #1 , disassemble the bolt and carrier and just slide the carrier in and out of the receiver with your finger and see if anything sticks with just the carrier. Try and troubleshoot one component at a time, the gas tube might be sticking in the carrier key, although if that's the case the rifle will normally still function. If the carrier slides in and out w/ no problem, install the bolt with cam pin and cycle that by hand (this is all with the upper/lower separated). You should be able to push the assembly all the way forward, and retract it w/ just your finger in the back of the carrier. It sounds to me like a tight headspace issue along with a faulty gas system somewhere, maybe a plugged carrier key.

Oh, and if the bolt is also chromed, the headspace may be too tight as their tolerances are also different from the chrome plating.
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