AR Bolts
What would cause the bolt to get stuck in the battery?
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Improper assembly of the bolt/carrier/firing pin.
Neal
EDIT: Rufe-snow makes a good point. But, the original poster only told us 10% of the actual situation, so he may only get responses that are 10% correct.0 -
We just had a post on this recently from a guy shooting a nearly new S & W chambered for 5.45 X 39.
The chamber tolerances were to tight for the cheap commie steel case, lacquer coated ammo. The residue from the lacquer built up over hundreds of rounds fired. This along with the heat generated by firing caused the case to seize up in the chamber and the bolt to lock up.
The chamber has to be kept very clean to prevent residue from building up, causing the cases to stick.0 -
quote:Originally posted by p2hc45acp
What would cause the bolt to get stuck in the battery?
Is that with or without a round in the chamber?
If it with a round, its likely the round is not resized or trimmed properly. Try loading it with factory loaded ammo with a clean chamber.
If its on an empty chamber, you may have a damaged bolt or the carrier key is loose or bent. Iam not sure how the bolt or bolt carrier could be assembled wrong to create a jam. Its almost impossible to install the extractor or firing pin incorrectly, and if you leave some parts out it would not cause it to jam in battery, the gun just would not work. Its also possible one of the gas rings broke and is floating around inside the carrier keeping the bolt from sliding within the carrier as it should.0 -
This is from a friend. THIS IS NOT the way to clear a jammed AR with a live round chambered. But it demonstrates one of the causes.
He should have held the rifle vertical safety on barrel up and bumped the stock on the ground to get the bolt to unlock. Sometimes it takes some pretty good force.
"I bought an AR-15 .223 DPMS upper for my AR-15 DPMS lower, having sold all of my uppers and having the one lower left. Was building up an upper but then the parts shortage hit and haven't been able to get the barrel I wanted for it, so I found this upper on Midway, not sure why they had it, but I think it was a return. When I took it to the range to break it in a bit I got this awful jam after 40 rounds. Had a live round stuck in there, had to take it home and very gently tap on the top of the round through the barrel until I could get the bolt unstuck, then had a heck of a time getting the bolt apart, turned out one of the gas rings had broken off and had jammed between the bolt and the carrier wall. Looked like someone had put a lot of grease in the bolt carrier, not sure if that was the problem or not. Some recommend grease, but I use CLP which is an improved version of the old military LSA. So I had to replace the gas rings, but of course they were backordered most everywhere. Once I got the rings replaced it appears to work but haven't gotten to the range to test it out yet. The round didn't appear to be damaged at all, just a little scuff. Never had a jam like that in an AR, and hope never again."0 -
quote:cheap commie steel case, lacquer coated ammo
anyone who uses this kind of ammo is a cheapskate and Commie supporter, if anything should be banned it is ALL commie ammo [:(!]0 -
Had this happen a few times in the many years of shooting AR 15's. Several times it was a "curled" gas ring, edge of gas ring would "curl" out of the groove and stick bolt closed. Always used the "mortar" method to unstick, grab charging handle as if charging the weapon and slam butt stock on the ground. If a live round, make sure safety is on and keep your face/body out of the way. 0
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