I'd make:
A Tec-9 clone in 9mm that takes Sten mags. I'd also make a Tec-9 clone in .38 super/9mm Largo/9x23. A .45acp and .40 S&W Tec-9 clone. Then the coolest one ever, a Tec-9 clone in 7.62x25! And an open bolt select fire version of all of these available to SOTs/dealers.
SP89 clone in .22lr that takes Ruger 10/22 mags. Also a full auto version with foregrips that is available to Class 2 SOTs/dealers.
An Uzi clone in closed bolt semi and open bolt select fire in 9mm, .40S&W ,10mm, 9mm Largo/9x23 Win/.38 super, and of course in 7.62x25.
Import some cheap revolvers, especially like 10 shot .22lr revolvers. Also import some of the Philippino revolvers, and Philippino pistols and shotguns in general.
Import the Yugoslavian Tokarev clones and the Yugoslavian CZ-75 clones.
Make a Sterling SMG clone in closed bolt semi auto and open bolt full auto for C2 SOTs and C3 dealers. I'd make it take Sten mags in the 9mm version, and then in the .38 super/9mm Largo/9x23 Win version, make it take a curvey looking mag like a traditional Sterling SMG mag. It'd also be available in 7.62x25, taking PPsh stick mags. The civi version would be closed bolt semi, with a stock and a 16 inch barrel without an extended shroud, or a pistol without a stock, civi versions would be available in all mentioned calibers.
A MP5 clone in 9mm, 9x23Win/9mm Largo/.38 super, and 7.62x25. The 9mm one would take Sten mags, and the 9x23Win/9mm Largo/.38 super one would take PPsh stick mags, and obviously the 7.62x25 one would, too. Compatible with HK trigger groups, in semi for serfs, and select for LEO/SOT/ect.
Bizon SMG clone. Semi auto for serfs, select fire for LEO/SOT/ect. In all the Bizon SMG calibers, probably would be built from Russian parts, and imported mags.
Cheap 10 round Saiga shotgun mags.
sub 50 dollar autoloading .22 pistol. Preferably pocket sized.
cheap .22 DA revolver, in the 50 dollar range.
bunch of sub 100 dollar guns, ala Jennings and the like. I'd like them to be of better quality, though.
Make a whole bunch of "liberator" ish pistols in 9mm one barrel, and .22 the other barrel. Since the bad guys, whoever they may be, will likely be using 9mm SMGs, but you'll likely have .22 lying around.
multishot .22 pistol with multiple barrels. 4 barrels and 10 barrels. You pull the trigger, and they all shoot off at once. A rifle like this would also be neat, 4 or 10 barrels. It'd be neat, and pretty cheap.
.223 revolver, Philippinos made those. I know Taurus or some company finally cought on and made one, but it has like a 10 inch barrel. I'd make them with 2-6 inch barrels. I even came up with a way to eject the shells out (but it's super secret, never know if S&W is reading this board, they may want to steal my idea....
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A single shot .223 pistol, ala liberator.
7.62x39 revolver.
7.62x25 revolver.
magazine fed lever action rifle, in military calibers. Preferably cheaply priced. If it could take AR mags and G3 mags, that'd be sweet.
cheap no frills .223 bolt action rifle that takes AR mags, preferably with a fast action and rails for a scope.
Import Khyber Pass guns of all kinds, from Martini Henrys and Lee Enfield clones, to pistols and stuff, too.
.223 AK that takes M16 mags out of the box.
lever action 9mm rifle with tube magazine.
double stack striker fired .22lr pistol, high capacity fun...
double stack 7.62x25 Glock/XD like pistol.
double stack .38 super/9x23/9mm Largo pistol.
A berdan primer reloading tool that doesnt suck (basically a tool like is used to reload boxer primers, but with 2 prongs, and you could have a whole set of them for different flash hole setups.
Sell a contact explosive to reload berdan primer cups with.
Black powder mortars.
Thermite 12 gauge shotgun shells.
Exploding 12 gauge shotgun shells.
Yeah, that's about it. Long list, but pretty cool, no?