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Need help with MPX/jammed bolt carrier group

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Old 05-07-2017, 09:07 AM   #1
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Need help with MPX/jammed bolt carrier group

Was in a hurry putting my MPX back together after cleaning and put the bolt carrier group into the upper receiver backwards. Pushed on it and heard it click. Realized it when trying to join upper and lower receiver. I know, dumb as he.. and not paying attention. Now bolt carrier group is jammed in upper receiver. Any idea how to remove. Don't be to hard on me guys. I have taken it apart and put together dozens of times. Today, I screwed up big time. HELP !!
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Old 05-07-2017, 01:47 PM   #2
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I would try a long wooden dowel and hammer, light taps, and see if it budges. Try working the dowel all the way around, so that if moving it comes out fairly even, if possible.

All I can think of, and don't even know if it's possible? Got any pics?
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Old 05-07-2017, 01:49 PM   #3
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Did you put the operating rod in backwards, too? Or just the bolt group in the operating rods backwards?

Again, really think pics would help?
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Old 05-07-2017, 02:32 PM   #4
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gehlsurf: After placing the charging handle in the upper receiver, I placed the entire bolt carrier group with the two spring rods into the charging handle groove. Not paying attention and gave it a good shove with the palm of my hand. Still did not pay any attention until I tried to join upper and lower receiver. Obviously, no go..then realized my screw-up. The charging handle will release, but does not engage the bolt carrier group. Wonder if the bolt group is not even sitting in the groove. Did hear a click though when I pushed on the bolt. Will remove the barrel to give me a clear shot at placing a dowel on the edges of the bolt. If that doesn't work, will take it over to the gunsmith at Shooters World on Fletcher Ave. in Tampa.

Thank you for your suggestions. I still can't believe I did something so darn careless. Your post is appreciated.
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Old 05-07-2017, 03:44 PM   #5
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I didn't realize you live in Tampa, I'm in St Pete!! Have you had any luck with the gunsmith at Shooters World? I have a gun smith here in St Pete, guy cerakote and installed my binary trigger in my MCX, and built my integrally suppressed shotty, dudes a genius. If you feel unsure about shooters world, give him a call.

Don't worry, he's told me crazier stuff people have done on accident, these things happen more than you think.

His shops name is Colts Ballistic Logistics, name is Colt, 7274214945
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Old 05-07-2017, 03:46 PM   #6
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Oh, be sure to put a towel or piece of wood under the upper when banging with the dowel, proabably common sense, but you don't want to be scarring it on concrete or the sort. Also, will pad the taps, remember, aluminum is soft.
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Old 05-07-2017, 03:58 PM   #7
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What about removing the barrel and taking the pressure off the bolt carrier group?
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Old 05-07-2017, 05:46 PM   #8
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gehlsurf: Live north of the Univ. of South Fl. Have used the gunsmith once for some bore sighting on my AR-15 when I mounted a new red dot. Did a good job on that. Have heard many positive comments from other shooters at the range regarding the gunsmiths. Going to remove the barrel as I mentioned and Icarlos also suggested. Going to give it a try using a dowel and some light taps. Keeping my fingers crossed it will dislodge and I will avoid taking it to the gunny.
Thanks for the tip of Colts Ballistic Logistics. Going to add his name and number to my contact list.
I know that I am probably being a little hard on myself, but I have been around weapons all my life (civilian/military) and I can't even comprehend what I was thinking when I did it. Correction: I wasn't thinking. Again, appreciate all your insight and suggestions.
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Old 05-07-2017, 05:50 PM   #9
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Quote:
Originally Posted by lcarlos View Post
What about removing the barrel and taking the pressure off the bolt carrier group?
Icarlos: Am going to remove the barrel as you suggested. It will allow me a straight shot with the dowel. Hoping some light taps around the perimeter of the bolt will dislodge it. Not hearing from any other members, so have to assume that taping with a dowel stick or some other blunt instrument is the way to dislodge the jammed bolt carrier. Thank you for your post. It is appreciated.
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Old 05-07-2017, 05:59 PM   #10
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It will work!
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Old 05-07-2017, 06:08 PM   #11
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Then again, there are certain jobs best left to a professional: High voltage electricity, hanging drywall on the ceiling and automatic transmissions. This job may be one of them...
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Old 05-07-2017, 08:18 PM   #12
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Quote:
Originally Posted by BGolden View Post
It will work!
B Golden: Thank you. Your vote of confidence is appreciated.
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Old 05-07-2017, 08:30 PM   #13
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sigmpx2017: Good examples of jobs best left to a professional. As you state, this may very well be one to add to the list. Going to try the dowel stick and some light tapping, but if it does not release, your advice is well taken. Appreciate your post in trying to help me.
As a former Naval Aviator, I really dig your Avatar.
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Old 05-08-2017, 06:09 AM   #14
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Updates?
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Old 05-08-2017, 09:17 AM   #15
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I'll suggest removing the upper, handguard and barrel - and then a very close/careful inspection - before deploying your hammer & dowel.

You really need to understand what that 'click' was about. This may be a clue that some components are potentially locked together and could break if force is applied.

I don't own MPX, but my MCX Carriage Assembly looks very similar. If I insert the Carriage Assembly into the upper backwards, and move CA forward until the action rod is flush with the upper's rear - the Carriage Assembly's recoil rods rear spring plate is hanging out the front of the upper.

I'm guessing that the 'click' you heard was this polymer spring plate snapping past the front of the upper receiver. If this is what's happened, simply re-aligning the spring plate with the upper should let you slide the carriage assembly out - without forcing the issue with a hammer...

Cheers
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