The Andro Corp ACI-15 CQB is a semi-automatic AR-style pistol chambered in 300 Blackout with an 8-inch threaded barrel. It has a black anodized aluminum receiver with a Picatinny rail, an M-LOK handguard, and a black polymer SBA3 brace in place of a shoulder stock. The barrel wears a black nitride finish and the gun feeds from a 30+1 capacity magazine. 
 

Key Specifications 

• Brand: Andro Corp Industries 
• Model: ACI-15 CQB 
• Caliber: .300 AAC Blackout 
• Action: Semi Auto 
• Capacity: 30+1 
• Barrel Length: 8" 
• Receiver Finish: Black Anodized 
• Barrel Finish: Black Nitride 
   

Detailed Features 

• The 8-inch 4150 chrome moly vanadium barrel has a 1:7 twist, is threaded 5/8x24, and comes fitted with an A2 flash hider. 
• An M-LOK handguard and a Picatinny rail on the receiver give room to mount optics and accessories. 
• A black polymer SBA3 brace and an A2 pistol grip round out the furniture. 
• The safety selector is ambidextrous for right- or left-hand shooters. 
• No sights are included, so the rail is intended for a red dot or similar optic.

Short-barreled AR pistols in 300 Blackout like the ACI-15 CQB draw interest from owners who want a compact, maneuverable build for close quarters or truck-gun duty. Reliability chatter around this class of build tends to focus on the gas system tuning that an 8-inch barrel requires, and owners generally report that a properly built short-barrel 300 Blackout gun runs clean once the buffer weight and ammunition are matched to the barrel length.

Handling is where this configuration earns its fans. The short barrel and brace keep the overall length compact, and the M-LOK handguard leaves plenty of room for a light or foregrip. Some owners find the SBA3 brace less comfortable for extended shooting sessions than a proper stock, which is a common tradeoff with this style of build.

On value, 300 Blackout pistols like the CQB benefit from the caliber's flexibility between subsonic and supersonic loads, and the AR-platform lower means magazines, optics, and grips are easy to source. Aftermarket support for the ACI-15 line is smaller than for major AR manufacturers, so some owners look elsewhere for drop-in upgrades.