90% of HP Pistol problems when new can be traced to lack of breakin! IE, springs too stiff. Go ahead, take it to the range when new and shoot it. If you recieve failure to feed problems of ANY kind, take it home and load the mags FULL. Leave them full on the shelf for TWO WEEKS before you try it again. This will soften the factory springs a bit and greatly improve the function! Also, when you do get back to shooting it, after you load a mag, tap the rounds to the back of the mag. Press on the rim of the top cartridge to ensure that the rounds are nose up in the mag. These things alone toook my C9 to 100% feed reliabiltiy with ZERO mag lip tweaking ans no ramp polishing!