Have a Glock 41 MOS, one year old and less than a 1000 rounds through it.
Have 6 standard mags, every round fired drops the magazine.
Replaced mag release and release spring.
Still happens
Where can I bring it near Wakefield for service?
Can't help you with the service near Wakefield, don't know shops in that area.
If it does it with six differen mags, (all OEM), then the problem is very, very unlikely to be the mags.
Do you feel/hear a solid CLICK when you insert the mag?
After the mag is inserted, what happens if you tug on the bottom of the mag?
If no CLICK and/or the mag pulls free - then the magazine release/retainer isn't holding the mag in.
Which means that it's defective, or you aren't seating the mag solidly enough.
If it's solidly holding the mag in, then chances are that you're pressing the mag release when you shoot.
Which says that you have a consistent grip, but it's not a good one for this gun.
I have a Gen 4 G41, (along with a couple other glocks), and haven't had this problem, nor heard of it before.
[edited to add proper seating of mag]