The Combat Armory CA-15 (brand part no. CA15.7FR.556P10) is a complete AR-15 pistol chambered in 5.56 NATO, built on billet 7075-T6 upper and lower receivers with a 7.5-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 7-inch M-LOK handguard with a full-length Picatinny top rail, mil-spec fire control group, and pistol buffer tube round out the build, and a 10-round magazine comes included. Among AR pistols, this short-barrel CA-15 favors shooters who want the most compact 5.56 format with full top-rail accessory space.

Key Specifications

• The chambering is 5.56 NATO.
• The barrel measures 7.5 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 7-inch M-LOK rail with full Picatinny top.
• 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.

What is the full Picatinny rail for? The uninterrupted top rail runs the handguard’s length, giving continuous mounting space for optics, lasers, and backup sights.

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

Buy the Combat Armory CA-15 7.5-Inch Pistol

A compact billet-receiver 5.56 pistol with full-rail flexibility is exactly what this CA-15 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.