Diamondback198468101
Diamondback DB15 Handgun .300 Blk 30rd Magazine 10.5" 5/8x24 Threaded Barrel FDE with SBA5 Brace$988.88
Availability: In Stock
Current Stock: Out of stock
The Diamondback DB15 Handgun in .300 Blackout is a short-barreled AR-platform pistol built for shooters who want a compact, maneuverable platform without sacrificing velocity or capability. Fed by a 30-round Magpul magazine and topped with an SBA5 stabilizing brace, this OD Green Cerakote finish rifle delivers a tactical edge whether you're running drills at the range, testing suppressor-ready ammunition, or building a specialized short-range rig. The 10.5-inch heavy 4150 CrMov barrel threaded 5/8x24 pairs well with suppressors and modern muzzle devices, while the included Obsidian muzzle brake manages recoil in its unsuppressed state.
Diamondback engineered this pistol with mil-spec reliability in mind: the carrier is shot-peened and magnetic particle inspected to catch hidden flaws, the upper and lower are both forged 7075 T-6 aluminum, and the gas system runs pistol-length to keep things reliable in a short package. The 9-inch M-LOK handguard leaves plenty of rail real estate for optics, lights, and accessories, while the Magpul MOE K2 grip and enhanced trigger guard provide a solid purchase in any shooting position. With a standard mil-spec trigger and total weight of 6.25 pounds, this is a handy, quick-handling platform that doesn't ask for much but delivers straight shooting out of the box.
Whether you're exploring the ballistic potential of .300 Blackout subsonic loads, wanting a truck gun that stores compactly, or building a dedicated suppressor host, the DB15 handgun is ready to work. It ships with one 30-round magazine and the SBA5 brace already installed—mount an optic and go to work.
| Caliber | .300 Blackout |
| Barrel Length | 10.5 inches |
| Barrel Material | 4150 CrMov, black nitride, 1:8 RH twist |
| Upper Receiver | A3 flattop, forged 7075 T-6 aluminum |
| Lower Receiver | Forged 7075 T-6 aluminum |
| Gas System | Pistol length |
| Bolt Carrier Group | Mil-spec 8620 steel, shot-peened, magnetic particle inspected |
| Handguard | 9-inch M-LOK with full Picatinny and QD mounts |
| Grip | Magpul MOE K2 |
| Trigger Guard | Magpul MOE enhanced |
| Trigger | Standard mil-spec |
| Brace | SB Tactical SBA5 |
| Muzzle Device | Diamondback Obsidian muzzle brake, 5/8x24 |
| Magazine | Magpul Gen M2 PMAG, 30 rounds (.300 Blackout) |
| Sights | None included (optic-ready flat-top) |
| Finish | OD Green Cerakote |
| Weight | 6.25 lbs |
| Length (Collapsed) | 28.25 inches |
This DB15 is a pistol platform—it's fitted with a stabilizing brace rather than a traditional rifle stock, making it shorter and lighter overall. The shorter barrel length (10.5 inches) also means faster action and less blast, which can be an advantage in tight spaces and with subsonic ammunition. Both rifles and pistols fire the same .300 Blackout cartridge; the platform determines the form factor and handling characteristics.
Yes. The barrel is threaded 5/8x24, which is a standard suppressor mounting pattern. The Obsidian muzzle brake is removable, allowing you to attach a suppressor directly to the threaded barrel. The .300 Blackout cartridge is popular for subsonic loads specifically designed to work well with suppressors.
The SB Tactical SBA5 is a stabilizing brace that straps to your arm, providing support and control when firing from the shoulder. It collapses and extends, allowing the overall length to adjust from 28.25 inches when collapsed for storage and transport. Always follow current federal and local regulations regarding brace use, as legal definitions can change.
The DB15 ships with one 30-round Magpul Gen M2 PMAG (chambered for .300 Blackout), the Obsidian muzzle brake already installed, and the SBA5 brace already attached. No iron sights are included; the flat-top receiver is ready to accept optics.
SKU: 198468106 • Weight: 7.6oz
Availability: In Stock
Current Stock: Out of stock
The Diamondback DB15 Handgun in .300 Blackout is a short-barreled AR-platform pistol built for shooters who want a compact, maneuverable platform without sacrificing velocity or capability. Fed by a 30-round Magpul magazine and topped with an SBA5 stabilizing brace, this OD Green Cerakote finish rifle delivers a tactical edge whether you're running drills at the range, testing suppressor-ready ammunition, or building a specialized short-range rig. The 10.5-inch heavy 4150 CrMov barrel threaded 5/8x24 pairs well with suppressors and modern muzzle devices, while the included Obsidian muzzle brake manages recoil in its unsuppressed state.
Diamondback engineered this pistol with mil-spec reliability in mind: the carrier is shot-peened and magnetic particle inspected to catch hidden flaws, the upper and lower are both forged 7075 T-6 aluminum, and the gas system runs pistol-length to keep things reliable in a short package. The 9-inch M-LOK handguard leaves plenty of rail real estate for optics, lights, and accessories, while the Magpul MOE K2 grip and enhanced trigger guard provide a solid purchase in any shooting position. With a standard mil-spec trigger and total weight of 6.25 pounds, this is a handy, quick-handling platform that doesn't ask for much but delivers straight shooting out of the box.
Whether you're exploring the ballistic potential of .300 Blackout subsonic loads, wanting a truck gun that stores compactly, or building a dedicated suppressor host, the DB15 handgun is ready to work. It ships with one 30-round magazine and the SBA5 brace already installed—mount an optic and go to work.
| Caliber | .300 Blackout |
| Barrel Length | 10.5 inches |
| Barrel Material | 4150 CrMov, black nitride, 1:8 RH twist |
| Upper Receiver | A3 flattop, forged 7075 T-6 aluminum |
| Lower Receiver | Forged 7075 T-6 aluminum |
| Gas System | Pistol length |
| Bolt Carrier Group | Mil-spec 8620 steel, shot-peened, magnetic particle inspected |
| Handguard | 9-inch M-LOK with full Picatinny and QD mounts |
| Grip | Magpul MOE K2 |
| Trigger Guard | Magpul MOE enhanced |
| Trigger | Standard mil-spec |
| Brace | SB Tactical SBA5 |
| Muzzle Device | Diamondback Obsidian muzzle brake, 5/8x24 |
| Magazine | Magpul Gen M2 PMAG, 30 rounds (.300 Blackout) |
| Sights | None included (optic-ready flat-top) |
| Finish | OD Green Cerakote |
| Weight | 6.25 lbs |
| Length (Collapsed) | 28.25 inches |
This DB15 is a pistol platform—it's fitted with a stabilizing brace rather than a traditional rifle stock, making it shorter and lighter overall. The shorter barrel length (10.5 inches) also means faster action and less blast, which can be an advantage in tight spaces and with subsonic ammunition. Both rifles and pistols fire the same .300 Blackout cartridge; the platform determines the form factor and handling characteristics.
Yes. The barrel is threaded 5/8x24, which is a standard suppressor mounting pattern. The Obsidian muzzle brake is removable, allowing you to attach a suppressor directly to the threaded barrel. The .300 Blackout cartridge is popular for subsonic loads specifically designed to work well with suppressors.
The SB Tactical SBA5 is a stabilizing brace that straps to your arm, providing support and control when firing from the shoulder. It collapses and extends, allowing the overall length to adjust from 28.25 inches when collapsed for storage and transport. Always follow current federal and local regulations regarding brace use, as legal definitions can change.
The DB15 ships with one 30-round Magpul Gen M2 PMAG (chambered for .300 Blackout), the Obsidian muzzle brake already installed, and the SBA5 brace already attached. No iron sights are included; the flat-top receiver is ready to accept optics.
SKU: 198468106 • Weight: 7.6oz