I've always liked the .22 mag. Started when I lived on a farm in North Dakota with a Marlin 25M. I've collected a few over the years (handguns and rifles). I bought a Keltec PMR30 for a plinker because of the caliber and it was a smoking deal. I was really surprised about some things related to it.
1. The trigger crispness is absolutely sterling in this price range in my estimation.
2. I'm able to shoot it very accurately, even with fast follow-up shots I'm able to stay on torso sized targets easily at extended range.
3. At approximately 14 ounces you just don't even realize it's on your hip.
4. The 30-round capacity is worthy of Henry's original slogan....Load it on Sunday and shoot it all week long.
5. Its been rock solid reliable for me so far...this was probably the most surprising aspect of the gun as I've read about reliability being a concern for a statistically notable number of purchasers. I should note that much of this is due to the finicky nature of the magazines and how they need to be loaded.
I'm currently carrying an SP101 in .327FM which I'm exceedingly happy with. I'm able to shoot it well but do notice the weight on occasion. I picked up a leather DeSantis holster for the PMR30 and it carries high and tight. The gun is slim. Rear sight is nonadjustable for windage or elevation but able to accept an accessory red dot sight mount.
As soon as I have some open time I'm taking it to the range for more evaluation on reliability and accuracy to see if I think I need a red dot and then make a decision if it goes into the EDC slot. I do have a leather mag holder that would be pressed into use for a total of 60 rounds on the hip if I decide to go that route.