I just purchased my first Glock! I bought a G23 with an OD Green frame. I am a medic and got the gun new with the Glock LE discount. Me and a buddy bought one today, I'm happy with the purchase. He just told me his gun jammed on the third round he fired. Could be cause it's new or the cheap ammo we bought to shoot through them. I know Glocks have a good reputation for reliability, and I plan on buying a G27 soon for another carry option. Any quirks I should know about the gun?