Description
Andro Corp has quietly built a reputation for turning out well-made AR platforms without the boutique markup, and the ACI-15 Halo MPS is a solid example of why. This one runs a 10.5 inch barrel cut from 4150 chrome moly vanadium steel with a QPQ Melonite treatment, which means excellent corrosion resistance and a bore that holds up to high round counts. The 1:7 twist stabilizes everything from lightweight 55 grain plinking ammo up to heavier 77 grain loads, and M4 feed ramps keep rounds feeding smoothly when you run it hard. Up front, the muzzle wears standard 1/2×28 threads, so swapping to a different flash hider, brake, or mounting a suppressor is a five minute job.
Built Around a Proven Core
Both receivers are forged 7075-T6 aluminum with a Type 3 hard coat anodized finish, and the upper carries T-markings plus a forward assist and ejection port door, the way a proper AR upper should. Inside you get a full-auto profile M16 bolt carrier group, which adds a bit of reciprocating mass for smoother, more reliable cycling in a short-barreled gun. The gas system uses a .750 low profile gas block tucked neatly under the 9 inch M-LOK handguard, leaving you plenty of real estate for a light, hand stop, or sling mount while the full-length Picatinny top rail handles your optic and backup sights.
Why the MPS Setup Works
The black polymer Minimalist Pistol Stabilizer is one of the lightest brace options on the market, and it keeps the overall package quick-handling and easy to store. Paired with the classic A2 grip, the ACI-15 Halo points naturally and stays maneuverable in tight spaces, which is exactly what you want from a compact 5.56.
Range Days, Truck Duty, and Home Defense
This platform takes standard AR-15 magazines and parts, so upgrades and maintenance are simple, and it ships with a 30 round magazine to get you started. Made in the USA and backed by Andro Corp's lifetime warranty, it's a lot of rifle-caliber capability in a package that fits where a full-size carbine won't.
Key Specifications
- Manufacturer: Andro Corp Industries
- Model: ACI-15 Halo MPS
- Manufacturer Part Number: 556105HBMPS
- UPC: 615629675180
- Caliber: 5.56 NATO / .223 Rem
- Action: Semi-Automatic
- Barrel Length: 10.5 inches
- Barrel Material: 4150 CMV steel, QPQ Melonite finish
- Twist Rate: 1:7
- Muzzle Threads: 1/2×28, A2 flash hider
- Gas System: .750 low profile gas block
- Bolt Carrier Group: M16 BCG with M4 feed ramps
- Receivers: 7075-T6 aluminum, Type 3 hard coat anodized
- Handguard: 9 inch M-LOK with Picatinny top rail
- Brace: Black polymer Minimalist Pistol Stabilizer (MPS)
- Capacity: 30+1
What’s Included
- Andro Corp ACI-15 Halo 5.56 NATO pistol
- One 30-round magazine
Frequently Asked Questions
Can I mount a suppressor on the ACI-15 Halo?
Yes. The 10.5 inch barrel comes with standard 1/2×28 muzzle threads and an A2 flash hider installed, so you can swap on a suppressor mount, brake, or comp of your choice. The M16 bolt carrier group and low profile gas block setup also handle suppressed shooting well.
What ammo does the Andro Corp ACI-15 Halo shoot best?
The 1:7 twist rate is a versatile choice that stabilizes a wide range of bullet weights, from common 55 grain range ammo up to heavier 69 and 77 grain match and defensive loads. Out of a 10.5 inch barrel, heavier bullets tend to perform well since they retain energy better at shorter velocities. It's chambered for 5.56 NATO, so it safely runs both 5.56 and .223 Remington.
Does the ACI-15 Halo MPS take standard AR-15 magazines and parts?
It does. This is a mil-spec pattern AR pistol built on forged 7075-T6 receivers, so standard AR-15 magazines, grips, triggers, and other components drop right in. It ships with one 30 round magazine, and any of your existing AR mags will work too.
What is the MPS brace on this pistol?
MPS stands for Minimalist Pistol Stabilizer, a lightweight black polymer brace mounted on the pistol buffer tube. It keeps the overall weight down and the profile slim, which makes the gun easier to handle and store compared to bulkier brace designs. If you prefer a different setup down the road, it's easy to swap.



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