Diamondback198468106
Diamondback DB15 Handgun .300 Blk 30rd Magazine 10.5" 5/8x24 Threaded Barrel OD Green with SBA5 Brace$988.88
Availability: In Stock
The Diamondback DB15 handgun in .300 Blackout is a compact, AR-pattern pistol built for shooters who want serious versatility in a short package. With a 10.5-inch heavy barrel and pistol-length gas system, this .300 Blk delivers the subsonic and supers flexibility that appeals to hunters, suppressors users, and tactical shooters alike. The FDE Cerakote finish over a forged aluminum upper and lower keeps weight down—just 6.25 pounds—while the SB Tactical SBA5 brace provides a solid platform for one-handed or two-handed shooting. Whether you're running it as an AR pistol for the range or as a truck gun for property or hunting, the DB15 brings enough modularity and quality components to justify serious use.
The backbone here is Diamondback's mil-spec pedigree: a shot-peened, magnetic-particle-inspected carrier, 4150 CrMov cold-hammer-forged barrel with black nitride finish, and a standard mil-spec trigger that breaks cleanly without surprises. The 9-inch M-LOK handguard with full Picatinny rail and QD mounts lets you attach lights, lasers, or vertical grips to suit your mission. The Magpul MOE K2 grip and enhanced trigger guard round out the ergonomics, giving you familiar controls and a solid purchase point. The DB Obsidian muzzle brake tames recoil and threads to 5/8x24—ready for cans, flash hiders, or whatever you thread on.
You get a Magpul Gen M2 PMAG 30-round magazine in the box, so you're loaded and ready to run. Factory sights are not included, so plan for an optic, red dot, or co-witness setup that matches your use case. Collapsed length is 28.25 inches, making it genuinely concealable or storage-friendly; extended, it settles into a more natural shooting stance. If you're after a .300 Blackout pistol with real build quality and no fluff, the DB15 punches well above the typical budget-AR-pistol tier.
| Caliber | .300 Blackout |
| Barrel Length | 10.5 inches |
| Barrel Material | 4150 CrMov, 1:8 RH twist, black nitride |
| Gas System | Pistol length |
| Upper Receiver | Forged 7075 T-6 aluminum, A3 flattop |
| Lower Receiver | Forged 7075 T-6 aluminum |
| Bolt Carrier Group | Mil-spec 8620 steel, shot-peened, magnetic-particle-inspected |
| Handguard | 9 inches, M-LOK, anti-rotation, full Picatinny with QD mounts |
| Grip | Magpul MOE K2 |
| Trigger Guard | Magpul MOE enhanced |
| Trigger | Standard mil-spec |
| Brace | SB Tactical SBA5 |
| Muzzle Device | DB Obsidian muzzle brake, 5/8x24 threaded |
| Magazine | Magpul Gen M2 PMAG, 30 rounds (included) |
| Sights | None (optic-ready) |
| Finish | Flat Dark Earth Cerakote |
| Weight | 6.25 lbs |
| Length (Collapsed) | 28.25 inches |
The pistol ships with one Magpul Gen M2 PMAG 30-round magazine. You'll need to source sights, an optic, or red-dot separately, as none are installed from the factory.
We can't provide legal advice—firearm laws vary by state and federal guidance continues to evolve. Consult your local laws and an attorney if you have questions about pistol brace legality in your area.
Yes. The 10.5-inch barrel and pistol-length gas system are well-suited to suppressed .300 Blackout, especially with subsonic ammunition. The threaded muzzle (5/8x24) accepts standard suppressors, and you'll want to remove or swap the DB Obsidian muzzle brake to install a can.
The DB15's short 10.5-inch barrel and pistol-length gas system make it more concealable and faster-handling than a full-length rifle, ideal for close-quarters use, vehicles, or properties where maneuverability matters. The trade-off is slightly less velocity than a rifle-barrel .300 Blackout, but modern ammunition and suppressor options close that gap considerably.
SKU: 198468101 • Weight: 7.6oz
Availability: In Stock
The Diamondback DB15 handgun in .300 Blackout is a compact, AR-pattern pistol built for shooters who want serious versatility in a short package. With a 10.5-inch heavy barrel and pistol-length gas system, this .300 Blk delivers the subsonic and supers flexibility that appeals to hunters, suppressors users, and tactical shooters alike. The FDE Cerakote finish over a forged aluminum upper and lower keeps weight down—just 6.25 pounds—while the SB Tactical SBA5 brace provides a solid platform for one-handed or two-handed shooting. Whether you're running it as an AR pistol for the range or as a truck gun for property or hunting, the DB15 brings enough modularity and quality components to justify serious use.
The backbone here is Diamondback's mil-spec pedigree: a shot-peened, magnetic-particle-inspected carrier, 4150 CrMov cold-hammer-forged barrel with black nitride finish, and a standard mil-spec trigger that breaks cleanly without surprises. The 9-inch M-LOK handguard with full Picatinny rail and QD mounts lets you attach lights, lasers, or vertical grips to suit your mission. The Magpul MOE K2 grip and enhanced trigger guard round out the ergonomics, giving you familiar controls and a solid purchase point. The DB Obsidian muzzle brake tames recoil and threads to 5/8x24—ready for cans, flash hiders, or whatever you thread on.
You get a Magpul Gen M2 PMAG 30-round magazine in the box, so you're loaded and ready to run. Factory sights are not included, so plan for an optic, red dot, or co-witness setup that matches your use case. Collapsed length is 28.25 inches, making it genuinely concealable or storage-friendly; extended, it settles into a more natural shooting stance. If you're after a .300 Blackout pistol with real build quality and no fluff, the DB15 punches well above the typical budget-AR-pistol tier.
| Caliber | .300 Blackout |
| Barrel Length | 10.5 inches |
| Barrel Material | 4150 CrMov, 1:8 RH twist, black nitride |
| Gas System | Pistol length |
| Upper Receiver | Forged 7075 T-6 aluminum, A3 flattop |
| Lower Receiver | Forged 7075 T-6 aluminum |
| Bolt Carrier Group | Mil-spec 8620 steel, shot-peened, magnetic-particle-inspected |
| Handguard | 9 inches, M-LOK, anti-rotation, full Picatinny with QD mounts |
| Grip | Magpul MOE K2 |
| Trigger Guard | Magpul MOE enhanced |
| Trigger | Standard mil-spec |
| Brace | SB Tactical SBA5 |
| Muzzle Device | DB Obsidian muzzle brake, 5/8x24 threaded |
| Magazine | Magpul Gen M2 PMAG, 30 rounds (included) |
| Sights | None (optic-ready) |
| Finish | Flat Dark Earth Cerakote |
| Weight | 6.25 lbs |
| Length (Collapsed) | 28.25 inches |
The pistol ships with one Magpul Gen M2 PMAG 30-round magazine. You'll need to source sights, an optic, or red-dot separately, as none are installed from the factory.
We can't provide legal advice—firearm laws vary by state and federal guidance continues to evolve. Consult your local laws and an attorney if you have questions about pistol brace legality in your area.
Yes. The 10.5-inch barrel and pistol-length gas system are well-suited to suppressed .300 Blackout, especially with subsonic ammunition. The threaded muzzle (5/8x24) accepts standard suppressors, and you'll want to remove or swap the DB Obsidian muzzle brake to install a can.
The DB15's short 10.5-inch barrel and pistol-length gas system make it more concealable and faster-handling than a full-length rifle, ideal for close-quarters use, vehicles, or properties where maneuverability matters. The trade-off is slightly less velocity than a rifle-barrel .300 Blackout, but modern ammunition and suppressor options close that gap considerably.
SKU: 198468101 • Weight: 7.6oz