Question on S&W M&P rifle?

I am having problem with some mags not allowing the bolt to lock once empty. This only seems to happen on some mags. I was told to change the plates out inside the mags. I am not sure why some work and some dont. Thinking of going to Magpul mags. Any ideas?

Spring? If the springs are not strong enough in the mag. What kind of ammo?

I'm like JP, were they new mags or what? What kind of followers?
Some of these guys clean 'em up, paint 'em and sell as like new.

jbpmidas wrote:Spring? If the springs are not strong enough in the mag. What kind of ammo?

They are new plastic mags. Unloaded. I don't think it is a weak spring issue

Do you have the same problem with all your mags?

What kind of ammo?

If they are the Thermold mags, just trash 'em. They suck.

I love the Pmags.

New doesn't necessarily mean good. If some mags work, and others don't, then there is most likely a problem with that mag. If they were cheapies, I might put them up for the end of civilzation. You might try a new spring or one of the magpul followers. I bought a couple of the pmags from muddawg95yj on this forum. PM him for a good price if you decide to go that route.

Off topic, but I noticed you have a couple of .45's. What do you do with your brass?

jbpmidas wrote:New doesn't necessarily mean good. If some mags work, and others don't, then there is most likely a problem with that mag. If they were cheapies, I might put them up for the end of civilzation.

Substandard equipment for zombie apocalypse? I think not!

I think they are cycling fine just not holding the bolt open on the last round.

quit buying cheap sh!t and expecting it to work

when are you people gonna get it?

Mom's and Dad's buy these and send em to their kids fighting in Iraq...etc....That's good enough for me.

No problems for me on my M&P 15T...ever...if I have a problem mag...it goes

http://www.blackweaponsarmory.com/magento/ar-15-magazines-accessories.html

jbpmidas wrote:New doesn't necessarily mean good. If some mags work, and others don't, then there is most likely a problem with that mag. If they were cheapies, I might put them up for the end of civilzation. You might try a new spring or one of the magpul followers. I bought a couple of the pmags from muddawg95yj on this forum. PM him for a good price if you decide to go that route.

Off topic, but I noticed you have a couple of .45's. What do you do with your brass?

Ok I got the picture, they are cheap mags. I will get some magpul mags. Thanks.

PS: As for the brass. I have not been shooting for a while but I will keep you in mind about the brass.

Thanks on the brass!

I found the problem. CHEAP mags purchased off the internet. You get what you pay for... lol

Never had a problem with my S&W. Have some new military issue and some used military issue. Have some bargain brand steel mags that do fine also. Never shot the plastic ones but never heard a bad word about a magpul. On different mags, I usually buy one or two to make sure they're ok. Hate to put a lot into them and them not function. Good Luck

i use all magpul mags with the exception of one and it is a factory steel colt mag... no problems here.

PMags for the win!!!