What about the ejector?

It looked like it was in one piece also, I examined every inch of the gun and couldn't really find anything that looked broken. However I only stripped the gun once before.

It could have moved a small amount out of position and caused you your grief. It would not need to be broken to start the problem.

Well I disassembled the gun at the range and at home. When I reassembled the gun at the range I would think it would solve such a problem. I would be happy if it's a simple problem like that since I will get my rifle back sooner.

Have you seen this post?

M&P 15-22 Repair thread for FTE.

Yes when I was researching the rifle. I thought about making that mod but I was afraid I would screw it up.

Update:

Well Gander Mountain was supposed to have looked at my rifle on Monday but the gunsmith wasn't in, even though they promised she would be in. I called again today in the afternoon and was told the rifle was sent out. Since I was on my lunch break I called back when I got home to get details. After being put on hold for what seemed like 10 minutes they come back on the phone. They fired the rifle but couldn't get it to jam, I think they're full of it. They probably only put two rounds through it. They said since the rifle was so new S&W wanted them to send it back and it's being sent overnight.

So I will call S&W tomorrow and see if they got it, I want to get a time frame for how long this whole process is going to take from the source. Also when I do get the rifle back I am going to demand to see the rifle test fired for more than 2 rounds to make sure the repairs are done.

Well, thats sux that Gander didnt bother to fix it, i kinda figured that, i would rather s&w fix it right anyways, hope you get it back asap!!!

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Smth & Wesson M&P AR15-22

Thanks TxShooter, hopefully they send it back just as fast.

You are better off having S&W look at it. The first time my 15-22 broke the extractor, Gander Mountain fixed it with parts from another in stock 15-22. The extractor lasted less than a month before breaking again. I sent it to S&W for repair and now the gun works great.