Description
There is something about a well-built AR pistol that just makes sense for tight spaces, truck duty, or a fun range day, and the Combat Armory CA-15 checks those boxes without the boutique price tag. The heart of this one is a 10 inch 4140 chrome moly vanadium barrel with a Melonite finish, M4 profile, and a 1:7 twist that stabilizes everything from 55 grain plinking loads up to heavier 77 grain match bullets. The 5.56 chamber means you can run 5.56 NATO or .223 Remington without a second thought, and M4 feed ramps keep rounds feeding smoothly when you are running it hard.
Billet Receivers on the CA-15 Pistol
Instead of the usual forged receivers you see at this level, Combat Armory machines the upper and lower from billet 7075-T6 aluminum and finishes both in Type III hard coat anodizing. You still get all the familiar touches, including a forward assist, dust cover, mil-spec charging handle, and an ambidextrous safety that left-handed folks will appreciate. The carbine-length gas system paired with a .750 low profile gas block is a smart pairing for a 10 inch barrel, keeping the action cycling reliably while staying tucked neatly under the handguard.
Ready to Build On: CA-15 Handguard and Rail
The free float 10 inch handguard runs a full-length Picatinny rail up top with M-LOK slots around the sides and bottom, so mounting a red dot, flip-up sights, a light, or a hand stop is quick and clean. The thin rail profile keeps the whole package easy to grip, and free floating the barrel helps accuracy stay consistent no matter how you load up the front end. An A2 flash hider caps off the 1/2×28 threaded muzzle, and if you want to swap in a different muzzle device down the road, that standard thread pitch makes it painless.
One 30 round 5.56 magazine ships with the pistol, so you can head straight to the range. For a compact 5.56 that leaves room in the budget for ammo and an optic, the CA-15 is a solid way to get into the AR pistol game.
Key Specifications
- Manufacturer: Combat Armory
- Manufacturer Part Number: CA15.10FR.556P
- UPC: 789091896425
- Caliber: 5.56 NATO (also fires .223 Remington)
- Barrel Length: 10 inches
- Barrel Material: 4140 Chrome Moly Vanadium
- Barrel Finish: Melonite
- Twist Rate: 1:7
- Muzzle Device: A2 Flash Hider, 1/2×28 thread
- Gas System: Carbine length with .750 low profile gas block
- Receivers: Billet 7075-T6 aluminum, Type III hard coat anodized
- Handguard: 10 inch free float M-LOK with full-length Picatinny top rail
- Safety: Ambidextrous, mil-spec style
- Buffer Tube: Pistol tube
- Magazine Capacity: 30 rounds
- Shipping Weight: 6.8 lbs
What’s Included
- Combat Armory CA-15 5.56 pistol
- One 30 round 5.56 magazine
Frequently Asked Questions
Can the Combat Armory CA-15 pistol shoot both 5.56 NATO and .223 Remington?
Yes. The CA-15 has a 5.56 NATO chamber, which safely handles both 5.56 NATO and .223 Remington ammunition. That gives you flexibility to run whatever is cheapest or most available without worrying about pressure issues.
Does the CA-15 come with a magazine?
It ships with one 30 round 5.56 magazine in the box. Since it uses standard AR-15 pattern magazines, any quality STANAG-style mag from brands like Magpul or Lancer will work if you want to stock up on extras.
Can I mount optics and accessories on the CA-15 pistol?
Absolutely. The 10 inch free float handguard has a full-length Picatinny rail across the top that lines up with the receiver rail, plus M-LOK slots for lights, hand stops, and other accessories. A compact red dot is a popular pairing on short-barreled 5.56 pistols like this one.
Can I swap the A2 flash hider for a different muzzle device?
Yes, the barrel is threaded 1/2×28, which is the standard pitch for 5.56 AR-platform muzzle devices. That means most flash hiders, muzzle brakes, and compensators on the market will thread right on. On a 10 inch barrel, many owners eventually add a blast diverter or linear comp to push muzzle blast forward.





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