Let me know how crazy this is or tell me if it has been done...

The 45 GAP is a higher pressure round designed to duplicate the lighter to medium weight bullets loads of the 45 ACP in a 9mm 40 S&W OAL automatic pistol.

Since the 45 GAP pistol/cart can take higher pressure and moderate to lightweight bullets it makes sense to neck the sob down to 40 cal to make if you will a fat 357 SIG. If the 357 SIG has a niche than the 40 Super-Short does too. Think of it as a 10mm power an a 40 S&W length. Some might think a 10mm power gun in such a small package might be crazy and I partially agree but the gun world is a place for crazies.

So shorten the 40 Super dies to the brass length of .850" for a power package par excellence.

Turn a compact easy carry 45 GAP gun into a stopper with a barrel swap

KABOOM!