I'm much, much, MUCH more interested in the M1A hanging off you. Also, a glock in the pants is a sure way to lose your mandhood.
If it were mine, I would already have a drum feed on it. Unfortunately, it belongs to the district attorney.
M1A and AR-15 might be useful against actual zombies. Thompson, not so much. A Glock could go either way. If only there actually were zombies.