CMMG's brand-new Guard Carbine chambered in .45 ACP might just be the home-defense AR-15 style rifle of your dreams. Why? Well, to begin, it's chambered in a very popular defensive pistol caliber, .45 ACP, which means that if your personal-defense handgun is in that same caliber you'll be able to "share" ammunition. Next, it's a nimble, lightweight firearm that's simple to shoulder, easy to shoot and produces very little felt recoil...which means that it will work well for every member of your family trained in its use, regardless of their strength or stature. In this video, Shooting Illustrated's Jay Grazio and CMMG's Jordan Wilson explain the technical backstory and various features of this innovative new carbine.