AR Experts? Spent case jam.. W/pics

[High-Cap]

hmmm can you? i didn't think you could.

i don't know i was asking the question, i am building one now, an wanted to know for myself and any other people that might not be overly familiar (yet) with the weapon...

[kingofwylietx]

just so i and many others that aren't familiar with the AR's will know...

is it possible to install the bolt backwards/upside down in the carrier...?

Yes, you can install it wrong. It only fits in 2 positions, correct and incorrect (which is 180 degrees off).

See below link for a video of how to disassemble and reassemble it. However, if the OP took it apart to clean, they can do the same, but rotate it 180 degrees this time.

http://www.brownells.com/aspx/NS/Gun...&p=0&t=1&i=866

[accordingtoome]

Wow that's crazy. As many times as I have taken them apart I never thought of it. Thanks all

[fuelfather]

Yes it is extremely possible to install the extractor 180 degrees off. I know on my M16 the bolt had a relief on the sides of the pin opening for visual reference to ensure proper installation.

[M. Sage]

One side of the carrier key hole in the bolt should be peened so that you can't do this...

If it had had this issue out of the box, I'd swear that he had a left-handed bolt in the rifle.

[jdh]

The microwave takes about 4 minutes to pop the popcorn so I had some time to kill. The bolt in the pic is backwards, and neither the S&W M&P15 nor Colt 6920 bolts can be installed that way.

[beefsalad]

My first time firing my DPMS I had it in bassackwards...Fortunately there was someone at the range familiar with the platform and helped me extract the casing. Two days later I was nowhere near breaking it in, and burnt to a crisp!

[lonewolf23c]

Disassemble the bolt assembly, give it a good cleaning, and when you put it back together make sure you put it together correctly. Definitely sounds like an extractor problem, possibly either a weak extractor spring, or a missing spring.

[txinvestigator]

Disassemble the bolt assembly, give it a good cleaning, and when you put it back together make sure you put it together correctly. Definitely sounds like an extractor problem, possibly either a weak extractor spring, or a missing spring.

Look at the pics. It was in wrong.

[ReVrEnD_0341]

One side of the carrier key hole in the bolt should be peened so that you can't do this...

If it had had this issue out of the box, I'd swear that he had a left-handed bolt in the rifle.

It's a DPMS. They generally don't do that. A bolt carrier group from LMT, Colt, LWRC, and similar high end manufacturers will only accept the cam pin when the bolt is in the correct position.