If large capacity magazines are a good idea in an urban environment, I wonder why the police don't use them....
Is that supposed to be ironic?
You realize most police departments use high capacity magazines in their sidearms, right?
From the LAPD website:
Glock:
9mm: Model 34, magazine capacity 17
Model 17, magazine capacity 17
Model 19, magazine capacity 15
.40 caliber: Model 35, magazine capacity 15
Model 22, magazine capacity 15
Model 23, magazine capacity 13
.45 caliber: Model 21, magazine capacity 13
Further, the SWAT teams I've seen practicing at the range all use AR platform rifles with 30 round magazines.
You were kidding, right???