I've been shooting the heck out of mine.
The magazines get progressively harder to load after about 20 rounds. 20 rounds load fairly easily. Also, don't play with the magazines after they are loaded. Leave them loaded. The cases become indented from pushing against them to load the next round and too much of this might affect how they work.
I was disappointed when I first got the gun out of the box, but it is really growing on me. 31 rounds. Let me repeat that, 31 rounds in the gun is something that has to be tried to know how much fun we are missing with other handguns.
It has been reliable except that the magazine has to be loaded with care otherwise the front of the bullet will be too low in the magazine and the round will not load. I have found that the perfect remedy for this is to use the polymer tipped bullets from Hornady or Remington. Remington has a larger bullet weight and the Hornady is faster.
It is light. Very light. It feels lighter than a loaded LCP.
Did I mention that this is a fun handgun.
I can hardly wait to be able to buy more magazines and I was thinking tonight as I shot a rabbit with it that I need to mount a small laser on the rail.
People keep talking about wishing it was in 22LR. I doubt that will be possible.
There is also a lot of talk of concealing this handgun. It's going to be more of a challange, but I suppose it could be done. It is fairly flat and weighs nothing. Mine has been utterly reliable and I'm currently at about 1000 rounds.
As for the magazine release being on the bottom of the grip, I didn't like it at first but it is easy to get used to and is fast. The only problem I see with it is that if used as a carry gun as some have suggested, it is very easy for someone else to disengage the magazine.
There has been some mention that this is a poor man's FN 5.7. I'm not all that excited about the FN. I've shot them and just ho-hum. The three things that make the PMR more fun than the 5.7 is; 10 more rounds in the grip, a third of the cost, and it is so very very light.