Mag Movement

When I grip my grip the mag moves back and is not flush in the mag well ,anyone else have this problem ,definitely going to be a deal breaker on this recently purchased Ruger..it is the mag with the extension on it...anyone else noticed this or is it just my Firearm and mag..

Might be useful if you told us the model and caliber of your pistol.

Lol,Duh,it would ,LC9 hammer fired

My SR9 has a bit of mag wiggle. Not a big deal.

Does the magazine wriggle, or does it disconnect?

Yes, two big questions... does it come loose on it's own and if it doesn't how does the pistol shoot.... if the answers are no on the first and just fine on the 2nd... then don't worry about it.