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The 300 Blackout cartridge was built from the ground up to burn its powder in short barrels, and that makes it a natural match for the Combat Armory CA-15 pistol. With a 7.5 inch barrel, you get nearly full performance out of the round, whether you are running supersonic loads for the range or heavy subsonics through a suppressor. The 1:7 twist rate stabilizes both ends of the bullet weight spectrum, so you are not locked into one style of ammo. Speaking of suppressors, the muzzle comes threaded 1/2×28 with an A2 flash hider installed, so swapping to a can or a different muzzle device is quick work.
Combat Armory starts with a 4140 chrome moly vanadium barrel in an M4 profile, then treats it with a Melonite finish for corrosion resistance inside and out. M4 feed ramps keep rounds feeding smoothly, and the pistol-length gas system with a .750 low profile gas block is sized correctly for a barrel this short. That gas block tucks neatly under the 7 inch free float handguard, which uses a slim M-LOK design that keeps the whole front end trim while still giving you real estate for a light or hand stop.
Both the upper and lower are machined from billet 7075-T6 aluminum and finished in hard coat Type III anodizing, which is a step up from the forged receivers you see on a lot of builds in this class. The upper follows M4 MIL-STD dimensions with a proper forward assist, dust cover, and charging handle, and the fire control group, safety, and small parts are all Mil-Spec. That matters down the road, because it means triggers, grips, and other upgrades drop right in.
This configuration ships with a single 10-round magazine and a pistol buffer tube, making it a compact, maneuverable platform for home defense, truck duty, or just an enjoyable day at the range. If you have been wanting to get into 300 Blackout without piecing together a build yourself, the CA-15 hands you a complete, ready-to-run pistol with all the right specs in all the right places.
Not at all, and in fact this is the sweet spot for the cartridge. 300 Blackout was engineered to reach near-full velocity out of barrels in the 7 to 9 inch range, unlike 5.56 which loses a lot of steam that short. The CA-15 gives up very little ballistically compared to a 16 inch gun in this caliber.
Yes. The barrel is threaded 1/2×28 and comes with a standard A2 flash hider that removes easily. Pair a can with subsonic 300 Blackout loads and the 1:7 twist barrel will stabilize those heavy bullets without issue, which is one of the biggest reasons folks pick this caliber in the first place.
It will. The fire control group, charging handle, safety, and other components are all Mil-Spec, so common AR upgrades drop right in. It feeds from standard AR pattern magazines, and it ships with one 10-round mag in the box. Just remember to keep your 300 Blackout ammo clearly separated from any 5.56 mags you own.
Combat Armory machines both the upper and lower from billet 7075-T6 aluminum and finishes them with Type III hard coat anodizing. The upper keeps M4 MIL-STD dimensions with a forward assist and dust cover, so you get the billet look and rigidity while staying fully compatible with standard AR components.
| UPC | 789091896616 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CA15.7SR.300P10 |
| Shipping Weight | 6.5 |
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