A couple of my shooting buds have LC9's but I didn't care for the trigger. When I tried the LC9s at the lgs, I decided to buy it and use it for cc. First mag was WW 124g +p bonded.(It only comes with 1) About 4" group @ 15yrds right of center. Slide doesn't lock back- certainly not due to wimpy ammo. Next 2 mags wolf 115g. 4 failures to fire - decent primer strikes but no bang. 1 slide hold open. Try the failed rounds in Berreta 92 & they all fire. Shoot up the rest of the box of wolf in the berretta. Fire a box of handloads with 115 Rainer hp and they all go. Only 1 more slide lock though. Went through a box of 124g Norinco hardball (I've had those in stock for some time). Slide locks back twice. Now the slide does not lock back when racking the gun with an empty mag. I suspect the made in America mag is bad, but I want my carry gun to shoot all kinds of ammo - no matter how hard the primer.