hi guys I'm new, just got a brand new Ruger lc9s pro from Gander mountain. took it to the range to get safe with it and went thru 50 rounds of federal with no problem. I clean the gun just a minor break down, lube the spring clean the barrel and lube the rack. I know how to clean a gun, there are twenty different videos online going over it, I did it correctly. Reassemble and guns perfect. i'm feeling happy with my purchase. A few days later I take my CCW class and after shooting my twenty five rounds I pass and decide to shoot the rest of the box. But the gun won't fire. rerack clear the round. Same thing, no click. The gun doesn't cock. 75 rounds in. Did I choose the wrong brand? Sure I have a protection plan its being sent back to Ruger but how do I trust it now? Maybe if you guys have any ideas what would stop it from cocking?