Also take apart the magazines and clean the inside like a doctor...no joke..get all the black crud out, a slow follower will give you problems for sure.. my carry mag gets cleaned every time. I will practice with mags I don't carry if I don't feel like cleaning. but always a clean mag and a clean gun. I put grease on a nylon brush and apply it to EVERYTHING, slide grooves, frame rails, barrel where it contacts anything, in the chamber lightly, on the recoil spring assy., face of hammer. If yours was mistreated you might want to totally disassemble it and clean out the hammer spring/plunger and give it a good once over, if your skill set allows such disassembly. These little pistols work great when you take the time and care seriously, The recoil spring takes a absolute beating because of the miniature size of the slide/mass and need replacing on a regular schedule...100rnds=$5.00 per spring. Both of mine run flawlessly with Gold Dots 115 or 124.