Turning the APC9K Into a Home Defense Weapon

More ammo is more options, and choosing a 30-round magazine is most certainly the right choice. This isn’t a big deal with B&T magazines, but Glock and SIG offer a variety of different capacities. Go big, or go home. 

It wouldn’t be out of sorts to use a magazine clamp to hold two magazines together. This allows for a rapid reload in the event you need one. The likelihood of needing to reload is very small, but you may need to fix a malfunction or broken magazine as well. Having two mags is never a bad thing. 

Ammo — Federal 147 Grain HST 

You can be more selective with ammo. I like the Federal 147 grain HST for a few reasons. First, it’s reliable, and that matters. Next, the projectile penetrates fairly deep and meets the FBI standard for penetration. Additionally, the round expands sufficiently to create a larger wound channel, and this prevents overpenetration. 

Additionally, the 147-grain round is subsonic, which ties in well with my last suggestion, a suppressor. 

Suppressor — Osprey 2.0

I’m not exactly making waves by saying guns are loud. Guns are very loud inside a small building like a home. The APC9K is a natural suppressor host. It’s already got a threaded barrel, and it’s super short already. One of the problems with adding a can to anything is the overall length. Since the APC9K is already superbly short, adding a suppressor is possible while keeping the gun remaining at a short overall length. As a blowback weapon, it’s not sensitive to suppressor use either.