I just got a gen 2 ran 150 round threw it dry out of the box no failures. Like the gun Its light with a decent round and stays on target.
This is the ammo that mine likes best. Group size is consistently 1/4 the size of anything else I feed it. Putting a magazine through one ragged hole at seven yards at point of aim is sweet!
It's like the budget version of the FN 5.7x28 pistol. The keltec likes hot ammo. I guess if you are going to get one get a gen 2.
Not sure which gen I have, it works just fine though also have the CMR-30 carbine, takes the same mags, very light, threaded barrel. The only downside I've found is loading the magazines is a bit of a pain.
I am thinking that for an old man with bad hands this is a great gun to fight. Light, low recoil, lots of bullets.
Shoot it at night at least once so you are ready for the muzzle flash. It may not be as large with all ammo, but it's impressive.