Q BOOMBOX SBR 8.6BLK 12″ 20RD FDE

Product Description

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The Q Boombox SBR 8.6 Blackout represents the ultimate integrated suppressor rifle platform: a 12-inch bolt-action SBR paired with Q’s proprietary suppressor, delivering subsonic 8.6 Blackout performance in one expertly engineered package. Built on AR ergonomics with a folding aluminum chassis stock, 20-round AICS magazine compatibility, and weighing just 8.8 lbs, the Boombox is purpose-built for precision suppressed fire without compromise. This is suppressor-first rifle design taken to its logical conclusion—the caliber, action, and sound mitigation engineered as a unified system from the ground up.

About Q LLC

Q LLC was founded by Kevin Brittingham, the former lead engineer at Advanced Armament Corp (AAC) and Remington Defense, who spent years developing some of the most innovative suppressed weapons systems in the industry. Based in Claremont, New Hampshire, Q has built a reputation for bold engineering, premium materials, and an uncompromising suppressor-first design philosophy that influences every product from concept through production. The Honey Badger PDW, The Fix bolt-action rifle, and the Sugar Weasel platform showcase Q’s commitment to marrying AR ergonomics with specialized calibers and suppressed performance—culminating in the Boombox, their most integrated vision yet.

Key Specifications

Why the Boombox Platform

The Boombox exists because 8.6 Blackout—a .338-caliber cartridge developed in collaboration with Q—is the big-bore answer to .300 Blackout’s limitations. Optimized for subsonic velocities, 8.6 BLK delivers significantly more terminal energy and suppression characteristics than smaller alternatives, making it ideal for precision work where hearing protection and stealth matter. The 12-inch barrel paired with the integrated suppressor creates a compact, handy package (29 inches folded) that doesn’t sacrifice velocity or sound signature—subsonic 8.6 BLK rounds stay well below 1,125 fps while maintaining ballistic integrity and impact energy that .300 BLK struggles to match at extended ranges.

Q’s bolt-action design breaks the AR-platform mold without sacrificing ergonomics: ambidextrous safety, AR-style controls, and a folding chassis stock mean shooters transition seamlessly from modern carbine platforms. The AICS-pattern magazine compatibility opens access to decades of aftermarket magazine development, and the 20-round factory box feeds flawlessly through the carefully engineered magazine well. At 8.8 lbs fully assembled, the Boombox is light enough for sustained fieldwork yet stable enough for precision accuracy—the suppressor integration means no separate can to add weight, complexity, or registration headaches. Every design choice reinforces the suppressor-first ethos: the action cycles cleanly, the trigger breaks crisp, and the shooter experience reflects Q’s philosophy that sound mitigation shouldn’t compromise performance.

Ordering from Western Sport

Order online and we ship it to the licensed FFL dealer you choose near you — see how buying a gun online works. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

Frequently Asked Questions

Q: What is 8.6 Blackout and why should I choose it over .300 Blackout?

A: 8.6 Blackout is a .338-caliber cartridge optimized for subsonic fire, delivering significantly more terminal energy and suppression performance than .300 Blackout. Designed in collaboration with Q LLC, it maintains subsonic velocities (under 1,125 fps) while providing superior ballistic integrity and impact energy, making it ideal for precision suppressed shooting where power and stealth matter equally.

Q: How long does the NFA approval process take for the Boombox SBR?

A: ATF Form 4 processing typically takes 8–12 months from submission to approval, though timelines can vary. As an SOT dealer, Western Sport handles all paperwork and ATF coordination. Once your Form 4 is approved, the Boombox is yours to take home with no federal tax stamp fee (a $0 tax due to our SOT status).

Q: Does the integrated suppressor affect accuracy or reliability?

A: No. Q’s suppressor-first design philosophy ensures the integrated suppressor is engineered as part of the system, not an afterthought. The bolt cycles cleanly, the trigger breaks crisp, and the entire platform is tuned for accuracy. At 8.8 lbs, the Boombox balances precision stability with practical weight for fieldwork.

Q: What magazines does the Boombox use, and are they available?

A: The Boombox uses standard AICS-pattern (AI Short-Action) magazines. The rifle ships with a 20-round factory magazine, and AICS magazines have been in production for decades with abundant aftermarket options available from multiple manufacturers, giving you flexibility and reliability.

Additional information