Description
There is a reason 300 Blackout and short barrels go together like coffee and early mornings. The cartridge was designed to burn its powder in a stubby tube, so an 8 inch barrel gives up very little compared to a full length rifle. Andro Corp leaned into that with the ACI-15 CQB, an American made AR pistol that pairs a nitride treated 4150 CMV barrel with a 1:7 twist, fast enough to stabilize heavy subsonics and plenty happy with supersonic loads too. The 5/8×24 threaded muzzle wears an A2 flash hider from the factory, and swapping it for your favorite muzzle device takes about two minutes.
What Makes the ACI-15 CQB Tick
Under the 7 inch free-float M-LOK handguard sits a pistol length gas system with a .750 low profile gas block, a combination tuned to cycle a wide range of ammo reliably. The upper is forged 7075-T6 aluminum with T-markings, M4 feed ramps, a forward assist, and a full length Picatinny top rail for optics. Inside you get an M16 profile bolt carrier group and a mil-spec lower parts kit, the kind of proven internals that just run. Andro Corp assembles, inspects, and test fires each one before it ships, and backs the whole thing with a lifetime warranty.
Where the ACI-15 300 Blackout Fits
At roughly two feet long with the SBA3 brace collapsed, this thing shines anywhere space is tight. It is a natural for home defense setups, stashes easily in a truck or bag, and makes a fun, soft-shooting range companion, especially if you ever add a suppressor down the road. Since it takes standard AR-15 magazines and accessories, upgrades are simple and parts are everywhere. Add a light on the M-LOK slots, top it with a red dot, and you have a compact package that punches well above its size.
Key Specifications
- Manufacturer Part Number: 3008CBMPS
- UPC: 615629599493
- Caliber: .300 AAC Blackout
- Action: Semi-Automatic
- Capacity: 30+1
- Barrel: 8 in, 4150 CMV, black nitride (QPQ) finish
- Twist Rate: 1:7
- Muzzle Thread: 5/8×24
- Muzzle Device: A2 flash hider
- Gas System: Pistol length with .750 low profile gas block
- Handguard: 7 in free-float M-LOK
- Receiver: 7075-T6 aluminum, black anodized, with Picatinny rail and T-markings
- Bolt Carrier Group: M16 profile
- Brace: SBA3 adjustable pistol brace
- Grip: A2 style
- Safety: Two-position safety selector
What’s Included
- Andro Corp ACI-15 CQB 300 Blackout AR pistol
- One 30-round magazine
Frequently Asked Questions
Will the ACI-15 CQB run subsonic 300 Blackout ammo reliably?
Yes, it is set up well for it. The 1:7 twist barrel stabilizes heavy subsonic bullets, and the pistol length gas system is tuned to cycle a wide range of loads. If you plan to shoot unsuppressed subsonics, quality ammo matters, since some budget subsonic loads run light on gas in any AR platform.
Is the ACI-15 CQB suppressor ready?
The barrel is threaded 5/8×24, which is the standard thread pattern for 30 caliber suppressors and muzzle devices. It ships with an A2 flash hider installed, so you can remove that and mount a direct thread can or the mount of your choice. 300 Blackout with an 8 inch barrel and subsonic ammo is one of the quietest suppressed combos out there.
Does this Andro Corp AR pistol take standard AR-15 magazines?
It does. 300 Blackout was designed to feed from standard AR-15/STANAG magazines, so the mags you already own will work. It ships with a 30-round magazine, giving you 30+1 capacity. Just be sure to keep your 300 Blackout mags clearly marked and separate from your 5.56 mags.
What can I mount on the ACI-15 CQB out of the box?
The flat top upper has a full length Picatinny rail for red dots, magnifiers, or backup sights, and the 7 inch free-float M-LOK handguard accepts lights, hand stops, and other M-LOK accessories directly. No extra adapters are needed for M-LOK gear, though you can add Picatinny rail sections if you have older rail-mounted accessories.





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