Mine works just fine with my ammo and any/all factory stuff.
The first ones seemed to like heavier 124 gr bullets but now they will shoot 115 gr. It works out of the box compared to say the Kahr PM 9 which requires a 250 round break in.
You do not need "tools" to take it apart, the take down lever will turn with the rim of a case or a penny. You do not need to press the striker release button, just check the gun us empty and pull the trigger like a Glock.
The gun is a tad bigger than the Kahr so not a true pocket gun.
It is very well made.
http://smith-wessonforum.com/lounge/...rket-nano.html