The perfect “truck gun”? Yes, maybe—especially when stowed away in a storage solution like the Elite Survival (elitesurvival.com) covert operations rifle backpack shown here.

QD sling swivel receptacles are machined into both sides of the lower receiver forward of the stock hinge. Included with the pistol are two 5-slot Picatinny rail sections with KeyMod mounts, a Picatinny rail mounted QD sling socket that can be mounted to either side, elevation adjustable front and windage adjustable rear flip-up sights, an adjustable nylon web sling with QD buckle and QD sling swivels at both ends, and one 30-round aluminum magazine.

For testing we mounted Sig Sauer’s new Romeo4 sight, with MOTAC moton-sensing technology which automatically turns the sight on when you pick the gun up. After a 50-yard sight in, two-hundred-plus rounds against our steel plate target rack produced not a single malfunction of any kind.

For accuracy testing from the bench for we used a variety of brands and grain-weights to determine if the MCX was going to be an ammo-sensitive machine. It wasn’t. Even though our MCX is chambered in a rifle cartridge, we dialed our testing range back to 50 yards to account for both zero-magnification and this platform’s intended close-quarters use. The MCX might be a new On Target record holder for downrange consistency. Our best 5-shot group came with Black Hills’ 50-gr. Barnes TSX 5.56mm load, printing a tight 0.82-inch cluster. Hornady’s 75-gr. BTHP Superformance Match 5.56mm load was a close second at 1.05 inches. We’re confident that with a magnifying optic our short-barreled MCX would be a solid 1-MOA performer.

One of the huge advantages of the MCX over a typical AR-15 is that it’s recoil system does not require a buffer tube, opening the door to a foldable or collapsible stock or brace.

In my opinion, the MCX with SBX arm brace is an outstanding personal defense weapon you can keep locked at your bedside, within a vehicle, in your backpack or anywhere else a truncated version of an ultra-relaible, ultra-competent, rifle-cartridge-firing pistol might prove vitally useful. For more information contact SIG SAUER, Dept. OT; Tel.: (603) 610-3000: Web: www.sigsauer.com