Q Boombox Features The Q Boombox SBR is chambered in 8.6 Blackout a cartridge built to deliver heavier bullet weights and greater terminal performance than standard 5.56 or .223 loads at moderate ranges. The 8.6 inch barrel keeps the SBR compact and maneuverable while still providing enough barrel length to extract solid velocity from the cartridge. Threaded to the M18x1.5 pattern the barrel is ready to accept a suppressor a natural pairing for a subsonic capable big bore cartridge like 8.6 Blackout. The semi automatic action cycles reliably with the included 20 round magazine giving shooters a solid capacity for a hard hitting short barreled rifle platform. A Magpul MOE-K grip gives the Boombox SBR a comfortable ergonomic hold that helps manage recoil from the larger 8.6 Blackout cartridge during rapid strings of fire. The anodized finish adds a layer of wear and corrosion resistance to the receiver helping the rifle hold up to repeated use in the field or at the range. Shipping with one magazine the Boombox SBR is ready to run out of the box for shooters already set up with 8.6 Blackout ammunition. For shooters looking for a compact suppressor ready SBR chambered in a modern big bore cartridge the Q Boombox SBR is a purpose built option. Q Boombox Specifications Manufacturer: Q Model: Boombox Type: SBR Caliber: 8.6 Blackout Action: Semi-Automatic Barrel Length: 8.6 Capacity: 20 Barrel Type: Threaded Thread Pattern: M18x1 Finish: Anodized Grip Type: Magpul MOE-K Included: 1 Magazine Available At: GrabAGun