Many moons ago I was running a P7M13 in a particularly rainy shotgun class (using P7M10 mags....don't ask). During a string of fire my shotgun went dry and I transitioned to a my P7 which promptly had a stoppage......tap-racked and my slide peter-pan'd into a puddle about 5 feet in front on me. The haters all danced in a circle that day singing ding-dong the witch is dead. To be honest, it was pretty damn funny. That was the last day I used an M10 mag in an M13 and I switched all of my take down buttons the "low-profile" type.