The Andro Corp Industries ACI-15 Halo is an AR-pattern .300 AAC Blackout pistol with a 10-inch barrel, built on a black anodized aluminum receiver with a Picatinny top rail. It ships with an M-LOK handguard and a black polymer SBA3 pistol brace. The barrel has a black nitride finish, a 1:7 twist, and a 5/8x24 threaded muzzle capped by an A2 flash hider, and the pistol feeds from a 30-round magazine for 30+1 capacity. 
 

Key Specifications 

• Brand: Andro Corp Industries 
• Model: ACI-15 Halo 
• Caliber: .300 AAC Blackout 
• Action: Semi Auto 
• Capacity: 30+1 
• Barrel Length: 10" 
• Twist Rate: 1:7" 
• Barrel Finish: Black Nitride 
• Barrel Material: Chrome Moly Vanadium 
• Receiver Material: Aluminum 
• Receiver Finish: Black Anodized 
   

Detailed Features 

• 10-inch barrel with a 5/8x24 threaded muzzle and A2 flash hider 
• M-LOK handguard for lights, foregrips, and other accessories 
• Black polymer SBA3 pistol brace for one-handed or braced use 
• Ambidextrous safety selector 
• Mil-spec trigger group

The ACI-15 Halo draws interest as a short, maneuverable .300 Blackout AR-pattern pistol. Owners generally report the aluminum receiver and black nitride barrel finish hold up well, and the fit between upper and lower is tight out of the box. The 10-inch barrel length is the main draw for buyers who want a compact package for close-range use.

Handling the Halo with the SBA3 brace gets mixed feedback: some shooters find it comfortable for braced shooting, while others plan to swap the brace or add a different grip to suit their hand size. The short barrel also means more muzzle blast and flash than a longer-barreled rifle, which some owners expect going in and others find louder than anticipated.

As a value proposition, the Halo is seen as a reasonably priced way into a compact .300 Blackout AR-pattern pistol build, with the M-LOK handguard making it easy to add lights or a foregrip without a gunsmith.