The Combat Armory CA-15 (brand part no. CA15.10SR.556P10) is a complete AR-15 pistol chambered in 5.56 NATO, built on billet 7075-T6 upper and lower receivers with a 10.5-inch Melonite-finished barrel. Combat Armory machines the barrel from 4140 chrome moly vanadium in an M4 profile with a 1:7 twist and M4 feed ramps, runs a pistol-length gas system under a .750 low-profile gas block, and caps the 1/2×28 threads with an A2 flash hider. A free-floated 10-inch slim M-LOK handguard, mil-spec fire control group, and pistol buffer tube round out the build, and a 10-round magazine comes included. Among AR pistols, this CA-15 favors shooters who want a billet-receiver 5.56 pistol at a working-gun price.

Key Specifications

• The chambering is 5.56 NATO.
• The barrel measures 10.5 inches, 4140 CMV with a Melonite finish and M4 profile.
• The rate of twist is 1:7.
• The muzzle is threaded 1/2×28 with an A2 flash hider installed.
• The gas system is pistol-length with a .750 low-profile gas block.
• The receivers are billet 7075-T6 with Type III hard-coat anodizing.
• The handguard is a free-floated 10-inch slim M-LOK rail.
• Ships with a pistol buffer tube and mil-spec fire control group.
• One 10-round magazine is included.

Frequently Asked Questions

Does this pistol come with a brace or stock? No, it ships with a bare pistol buffer tube. It is configured as a pistol — installing a shoulder stock on a firearm with a barrel under 16 inches requires NFA registration first.

Is the muzzle threaded for other devices? Yes, the standard 1/2×28 threading accepts common 5.56 muzzle devices and suppressor mounts.

What magazines does it accept? Standard AR-15 magazines; a 10-round magazine is included.

Buy the Combat Armory CA-15 5.56 Pistol

Billet receivers, a Melonite barrel, and a free-floated M-LOK rail at a working price are exactly what this CA-15 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.