APC300

APC300

The Quiet Professional

The 300 BLK cartridge has quietly made a name for itself within the professional community, with its use among special operations forces—both military and law enforcement—steadily on the rise. The reasons are clear: when firing subsonic loads suppressed, the cartridge offers a Hollywood-quiet sound signature. With a simple magazine change to supersonic loads, it delivers near AK47-level terminal performance in real time. Given the versatility of the 300 BLK and its optimization for short, sub-9-inch barrel lengths, it is an ideal cartridge for urban assault rifles.

Features
  • Hydraulic Buffer System
  • Full Ambi Controls
  • Two-Stage Trigger
  • M-Lok Compatible Handguard
  • Adjustable Gas System

Dialed In on 300 BLK


The APC300 shares all the refined ergonomics, handling, and modularity features that have made the APC9 so popular, but it is chambered in the versatile 300 BLK cartridge. The ability to fire both super and subsonic loads of differing energy levels—suppressed and unsuppressed—presented some engineering challenges. To overcome these, the APC300 features an adjustable gas valve positioned forward of the handguard, allowing the user to select the amount of gas introduced into the system. This makes the platform easily tunable for various ammunition and suppressor combinations. Given the similarities in size, weight, and ergonomics between the APC300 and APC223/556 platforms, many customers utilize the APC223/556 as a training weapon and reserve the APC300 for operational use. This approach saves a substantial amount of money given the cost of specialized 300 BLK ammunition.

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