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Posted: 5/19/2004 1:36:48 PM EDT
| My buddy has a Colt match target AR15. It has problems with the spent shell getting stuck in the chamber. The bolt never opens after the shot. It sometimes takes quite a bit of force to get it open. It has done this since new. We have tried different magazines, different lowers, and different ammo with no luck. Any ideas would be greatly appreciated. He spent a lot of money on this rifle and it has never has worked right. Thanks |
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Just to be clear, is this happening with every round fired? If it's happening with every round fired you have a major league gas problem... I'd wonder if the gas tube is in upside down, the gas port is incorrectly drilled, or the FSB isn't centered properly on the gas port... The gas tube is an easy 2 minute fix, gas ports or FSB centering problems can be a bit more difficult, but certainly not impossible. If the problem is periodic, I'd suspect a very tight or rough chamber or perhaps a tight headspace problem... Your friend should consider contacting Colt Customer Service. If you do have a headspace problem that's normally beyond the average home ARsmith to properly correct... You may want to cross post in the Troubleshooting forum and get the opinion of Dano and Tweak... |
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First thing - Read the Manual- www.biggerhammer.net/manuals/tm9-1005-319-10.pdf Second - Field strip - clean - examine major parts for damage/wear Third - if you find nothing wrong - Send it to Colt , or a Gunsmith 
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Swap bolt carriers with a working rifle. If the problem goes away it's in the carrier, if not it's probably the gas tube, something you can replace with handtools. Hopefully no one stuck something in the gas tube in an ill advised attempt to clean it. I've seen a primer stuck in the bolt gas key, or at least part of one. Commercial ammo, blown primer. You should be able to get a pipe cleaner completely thru the gas key and the tip come out inside the bolt carrier. -- Chuck |
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