The Model 11 and Auto 5 are both in heavy demand for Zoot matches. Most of them have had the barrels cut back to the length of their aftermarket extended magazine tubes. My 11 is tricked out in just this fashion.
Clyde Barrow was famous for cutting his guns down, everything from shotguns to Browning Automatic Rifle's stolen from National Guard Armories. Lawmen and criminals were some of the first people to make combat modifications to their firearms. AZSA encourages these sorts of historical correct (within modern legal limits of course) modifications to match guns.