Diamondback DB15 AR-15 Semi-Auto Rifle .300 AAC Blackout 16-Inch with VLIFE Optic and Magpul Furniture
This Diamondback DB15 is an AR-15 pattern semi-automatic rifle chambered in .300 AAC Blackout (7.62x35mm) with a 16-inch barrel and a direct impingement action. It is marked "DIAMONDBACK FIREARMS, LLC / COCOA, FL USA" on the receiver, with "CAL. MULTI" and "DB15" on the lower, and a "300" and "AAC" marked ejection-port cover. This example is set up with a free-float M-LOK-style handguard, a flat-top Picatinny upper, and Magpul furniture, and it includes a mounted VLIFE optic.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape with some minor scratches and blemishes. The bore is clean and shiny.
What's Included
- VLIFE optic (mounted; adjustment markings "UP" and "LOCK" visible)
- 1x Magpul PMAG 30 AR 300 B magazine for 7.62x35 / 300 BLK (GEN M3 marking visible)
Built on the AR-15 platform, this DB15 combines a flat-top Picatinny upper with standard AR features including a forward assist and dust cover. The included VLIFE optic is mounted, providing a ready-to-use sighting setup based on what is present on the rifle.
The free-float M-LOK-style handguard is paired with a short Picatinny section that is attached to the handguard. This configuration supports accessory mounting while maintaining the free-float layout described in the provided information.
Furniture includes a Magpul-marked adjustable carbine stock and a Magpul pistol grip. The length of pull is stated as 10.5 to 13.5 (per supplied input), and the stock is polymer with an adjustable design.
Chambered in .300 AAC Blackout, the ejection-port cover is clearly marked "300" and "AAC," and the included magazine is a Magpul PMAG 30 AR 300 B specified for 7.62x35 / 300 BLK. Capacity is listed as 30+1 with the included 30-round magazine.




