Description
The Combat Armory CA-15 is about as compact as a 5.56 AR platform gets. It pairs a 7.5-inch 4140 chrome moly vanadium barrel with a slim 7-inch free-float M-LOK handguard, so you get a short, fast-handling build that stays easy to maneuver in tight spaces or stash in a truck bag. Both the upper and lower receivers are machined from billet 7075-T6 aluminum and finished in Type III anodizing, which is a step up from the cast or forged receivers you'll find on a lot of entry-level pistols.
What Sets the CA-15 Pistol Apart
The barrel does a lot of the heavy lifting here. It's Melonite-treated inside and out, which helps with corrosion resistance and longevity compared to a plain phosphate finish. The M4 profile and M4 feed ramps keep things feeding smoothly across a wide range of ammo, and the 1:7 twist rate stabilizes everything from lighter varmint loads up to heavy 77-grain match bullets. Up front the muzzle wears an A2 flash hider on 1/2×28 threads, running off a pistol-length gas system with a .750 low-profile gas block.
Running the CA-15 the Way You Want
The slim 7-inch M-LOK rail free floats the barrel and leaves you plenty of room to add a light, hand stop, or sling mount without bulking up where your support hand sits. All the controls are MIL-STD, including the safety, charging handle, and fire control group, so parts and upgrades are easy to source. It ships with a bare pistol buffer tube, giving you a clean slate to set it up however you like. One 10-round magazine comes in the box.
For anyone wanting a no-nonsense, close-range 5.56 that leans on quality components instead of corner-cutting, the CA-15 is a solid value that leaves plenty of room to make it your own.
Key Specifications
- Manufacturer: Combat Armory
- Model: CA-15 Pistol
- Manufacturer Part Number: CA15.7SR.556P10
- UPC: 789091896593
- Caliber: 5.56mm NATO
- Barrel Length: 7.5 inches
- Barrel Material: 4140 Chrome Moly Vanadium
- Barrel Finish: Melonite
- Barrel Profile: M4
- Twist Rate: 1:7
- Thread Pitch: 1/2×28
- Muzzle Device: A2 Flash Hider
- Gas System: Pistol Length
- Gas Block: .750 Low Profile
- Handguard: 7" Free Float Slim M-LOK Rail
- Receivers: Billet 7075-T6 Aluminum, Type III Anodized
- Magazine Capacity: 10 Rounds
- Buffer Tube: Pistol Tube
What’s Included
- Combat Armory CA-15 5.56 AR pistol
- One 10-round 5.56 magazine
Frequently Asked Questions
Does the CA-15 pistol come with a brace or stock?
No, this model ships with a bare pistol buffer tube. That gives you a clean starting point to set up the rear of the pistol however you prefer. The buffer tube is a standard pistol tube, so it accepts common pistol-length accessories.
Is the barrel on the Combat Armory CA-15 threaded?
Yes. The muzzle is threaded 1/2×28, which is the standard thread pitch for 5.56. It comes with an A2 flash hider installed, and swapping to a different muzzle device is a quick job.
What magazine does the CA-15 pistol use?
It ships with one 10-round 5.56 magazine. Since it's a standard AR-15 pattern lower, it accepts common STANAG-style AR magazines, so finding spares or running higher-capacity mags is easy.
What kind of ammo works best in the 7.5-inch CA-15?
The 1:7 twist rate stabilizes a wide range of bullet weights, from lighter 55-grain loads up to heavy 77-grain match ammo. Out of a short 7.5-inch barrel, heavier projectiles tend to retain velocity and performance a bit better. The M4 feed ramps help it run reliably across most quality factory ammo.




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