Honesly a gun that shoots different calibers in one gun would be soo cool. Hearing multiple calibers going off would totally be dope. Like fires heavy 50 cal then 7.62 then 5.56 to like a 45 then little 22lrs pinging you at the end would be like the every mans gun salute in one gun. Haha Clow Clow Clow! Pow pow pow. Blow blow blow. Bop bop bop. Pew pew pew. Then repeats sequence again haha. Cause look i drive around in a police truck running 3 different guns hooked up to 3 different buttons and the sounds i can make and songs i make are the best. I get dudes coming over like whuuuuuut he shooting it sounds strange! imitating a cyclone for lols. And then they see me shooting differnt guns individually. The horse gallop i can make with the guns is the best. Rb,Rt,Lt, Rb,Rt,Lt x12 times going faster n faster every time coming in at 100kph to ram an enemy thats chewed up from the cavalry sound of bullets makes it soo much fun. Honesly thats what i thought the cyclones were was a horse galloping sound kinda from my first experience against one. Long time ago that was.
Maybe have the gun be able to shoot from smallest caliber to largest and largest to smallest so it has different defense parameters.