Okay over penetration is in regard to going through people not necessarily just walls and such.
Secondly automatic fire is soo useless for 90% of what they do esp rifle fire! Well unless you're very relaxed about friendly fire.
Shotguns can blow hinges yes but that's no reason to carry a whole load of them. Using an open choke only increases the chance of injuring friendlies and it's kinda interesting that Geneva looks down on shotguns but the police forces can use them. 1.5 meters spread at 50meter range... in a room... in a room with other SWAT members.... in a room potentially with innocents in it!!!
It's getting like Elmer Fudd runs the SWAT!
Anyhow that's a little off topic perhaps. I'll stop now.