Not going to happen, there are far too many issues
First thing is the ammo and how you're going to contain it. Even if you had 128 non-static objects it would be extremely difficult to contain ammo in a container of reasonable size.
Second is how the guns would fire. Mac used extremely bouncy objects within the rifle to shoot his sniper, and even with the tori laying down flat the recoil fucked you over frequently. Being able to manually trigger a shot would be next to impossible as well, especially if you have more than 1 bullet.
Fitting all of the components into a handheld gun is literally impossible. You might be able to make a large cannon like structure, but that's just not the same