Q LLC The Boombox 8.6x43mm Blackout SBR 8.6x43mm Blackout Black SBR Rifle

Q LLC The Boombox SBR is the Fix platform reinvented for compact performance in 8.6x43mm Blackout. It combines a one-piece receiver, a short 45-degree bolt throw, and a free-float Q-Sert handguard with a full-length M1913 Picatinny top rail for easy optic setup. The muzzle is threaded M18x1.5 and ships with a Cherry Bomb muzzle brake.

Key features

• Bolt-action 45-degree short-throw design for fast, controlled cycling
• Fully adjustable folding stock for compact carry and precise setup
• Free-float Q-Sert handguard for improved handling and consistency
• SR-25 magazine compatible for familiar magazine options
• Full-length M1913 Picatinny top rail for optic mounting

Built for shooters who want a compact 8.6x43mm Blackout SBR with Q’s bolt-action approach, The Boombox delivers a modern foundation for precision setups.