The AAC 300-SD is a dedicated rifle suppressor designed specifically for use with .300 AAC Blackout platforms, with an emphasis on subsonic ammunition performance. Constructed from 3D-printed titanium, the suppressor offers a balance of durability, heat resistance, and reduced overall weight. Its modular two-piece configuration allows users to select a longer or shorter overall length depending on desired sound suppression and handling characteristics.

The 300-SD is rated for both subsonic and supersonic .300 BLK loads and utilizes a 1.375×24 HUB-compatible interface for flexible mounting options. Supplied with a direct-thread HUB mount and AAC Blackout flash hider, the suppressor integrates with a variety of host rifles and mounting setups. Its design and dimensions make it well suited for suppressed SBRs and other .300 BLK platforms where compact size and sound reduction are priorities.

Specifications

• Caliber: .300 AAC Blackout
• Maximum Rated Caliber: .300 BLK Supersonic
• Construction: 3D-Printed Titanium
• Configuration: Two-Piece Modular Design
• Length: 8.00 in (Long) / 5.43 in (Short)
• Weight: 12.2 oz (Long) / 5 oz (Short)
• Diameter: 1.60 in
• Mount Interface: 1.375×24 HUB Compatible
• Mount Type: Direct Thread HUB Mount, 1×16 LH
• Included Muzzle Device: AAC Blackout Flash Hider, 1×16 LH