The Combat Armory CA-15 5.56mm pistol (brand part no. CA15.10FR.556P) is a complete AR-pattern pistol built to Mil-Spec dimensions from billet 7075-T6 aluminum upper and lower receivers, hard-coat anodized black. Combat Armory chambers the 10-inch, 4140 chrome-moly-vanadium barrel in 5.56mm with a melonite finish and M4 feed ramps for reliable function, then wraps it in a free-float M-LOK handguard that runs the full length of the barrel. A carbine-length gas system, A2 flash hider, and low-profile gas block keep the pistol running clean, while Mil-Spec fire control and charging components mean parts compatibility with the broader AR-15 ecosystem.

Key Specifications

• Chambered in 5.56mm NATO, with a 30-round magazine included.
• The 10-inch barrel is 4140 chrome-moly-vanadium steel with a melonite finish.
• Rifling twist rate is 1-in-7 inches, suited to heavier 5.56mm bullets.
• The gas system is carbine length with a .750 low-profile gas block.
• A 10-inch free-float M-LOK handguard covers the barrel for mounting accessories.
• Upper and lower receivers are billet 7075-T6 aluminum with Type III hard-coat anodizing.
• The muzzle wears an A2 flash hider.
• The safety selector is Mil-Spec, ambidextrous style.
• The barrel extension uses M4 feed ramps for reliable feeding.
• The buffer system uses a pistol-length buffer tube, keeping the gun classified as a pistol.

Frequently Asked Questions

What magazine capacity does it ship with? A 30-round 5.56mm magazine is included.

What is the handguard made of and how long is it? A 10-inch free-float M-LOK handguard covers the length of the barrel.

Is this pistol built to Mil-Spec dimensions? Yes, all major components follow Mil-Spec dimensions for parts compatibility.

Buy the Combat Armory CA-15 5.56mm Pistol

Billet receivers, a melonite-finished barrel, and Mil-Spec internals make this Combat Armory CA-15 pistol a solid foundation for a compact 5.56mm build. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and browse more of our AR pistols.