S&w m&p 15-22

My son has one of these rifles. Has had problems with the shell not ejecting.
We tried 3 different brands of ammo.( Win., Rem.,& CCI.) Not much fun plinking
when every third round or so gets hung up.
I have the same gun, always run CCI through it, & have no issues.
So anybody else have this issue? Any advice on what could be causing it &
what to do about it would be appreciated.

Sell or trade it for a 10/22. If you get a 50 round drum mag for it your kid will forget all about the "Tacticool" AR.

THANKS FOR THE ADVICE, that helps me alot.

He called S&W, & told him to send it back. They will fix it-no charge.

He got it back yesterday. Taking it to the range today. Said they replaced some parts, & "brought it up to current standards".
Not only that, but they replaced the barrel, ( had some minor rust on it.) How cool is that?

Always good to hear about go customer service. Enjoy!