[psymmonds]

Fully loaded my m&p 40 mag rattles. Anyone else have this problem?

[HOSSFLY]

Well, nobody said nothing so---
Don't own m&p but i have a double stack kel-tec that does the same- nothing to be concerned with-

[cvia]

Mine does. All three of them do. When fully loaded. I think most mags do. Seen Glocks do the same.

[psymmonds]

I only asked because my m&p mag rattles but my beretta mag doesn't. I didn't figure something was wrong with it, just wondering if there was a way to make it stop

[cvia]

I've got no idea. My M&P mags are the only ones that rattle. Google it. I wouldn't know where to begin.

[cmahan]

All 3 of my m&p with fully loaded mags rattle, was told by my gun smith it's nothing to be concerned about

[ZombieKiller83]

My .40 mags rattle fully loaded as well. Both feed rounds perfectly so i wouldn't worry about it