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Posted: 4/11/2026 11:56:18 AM EDT
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My AR is jammed up, and I would appreciate any advice on what to do next. Was shooting my AR and the action only opened about 1/4 after the last shot. Mortared it on the ground enough to clear the chamber, and now it is stuck with the bolt lugs about centered in the ejection port window. I am pretty sure there is a spent primer somewhere in the gun tying up the action because I had several fall out in the lead up to this. Since the BCG is halfway back, I am struggling to remove the upper from the lower and afraid that if I force it, I’ll break something. Any ideas on what to do next? I’m struggling to think of a way to get the BCG back forward other than banging the gun muzzle-down on a block of wood or something. |
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Saw something similar in a class a few years back. The solution there was to pound a steel rod down the barrel until the BCG went back far enough to let a spent primer fall. The primmer was between the gas key upper acting as a wedge. Can you remove the stock and receiver extension? |
| Thanks for the suggestions. I don’t know why I didn’t think about removing the buffer tube. Took it off, tapped the BCG forward with a rubber mallet, and that seemed to dislodge the primer. I think it was indeed stuck between the sloped back of the gas key and the top of the upper receiver. |
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Blown primers can happen for several reasons. When the end up under the trigger group, it can cause fail to fire, full auto, and safety selectors not working correctly which can include the gun firing when the safety is put into the safe mode. Blown primers in the bolt lug recess can cause fail to lock into battery, and even fail to unlock from battery. Blown primers in the bolt carrier cam pin recess area can cause the issue that sounds like you possibly had going on. We show this tool in the Armorer courses we teach. It is handy when the bolt carrier assembly is stuck forward. https://www.ustoolanddesign.com/products/manual-bolt-extraction-device  CY6 Greg Sullivan "Sully" WeaponsArmorer SLR15 Rifles Defensive Edge Training (763) 712-0123 |
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Originally Posted By sully: Blown primers can happen for several reasons. When the end up under the trigger group, it can cause fail to fire, full auto, and safety selectors not working correctly which can include the gun firing when the safety is put into the safe mode. Blown primers in the bolt lug recess can cause fail to lock into battery, and even fail to unlock from battery. Blown primers in the bolt carrier cam pin recess area can cause the issue that sounds like you possibly had going on. We show this tool in the Armorer courses we teach. It is handy when the bolt carrier assembly is stuck forward. https://www.ustoolanddesign.com/products/manual-bolt-extraction-device https://www.ustoolanddesign.com/cdn/shop/products/IMGP0968_1024x1024.jpg?v=1459545739 CY6 Greg Sullivan "Sully" WeaponsArmorer SLR15 Rifles Defensive Edge Training (763) 712-0123 Interesting tool right there. In the past I have used inertia to move a stuck bolt carrier, and also a brass punch and mallet…. Of course this was for quick fixes, and I had spare guns to issue out of I broke something. I would likely take a little more care with my own rifle. Blown primers can be interesting to say the least…once had one get jammed into the FCG and got a burst when I was zeroing on a bench….not cool. |
a loaded gun won’t set you free, so you say…
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