RIFLE: DIAMONDBACK FIREARMS MODEL DB15 RIFLE, SERIAL NUMBER DB2408898, BLACK (MATTE), CASE NOT INCLUDED, SEMI - AUTOMATIC, 5.56 NATO, 16IN Notes: The Diamondback DB-15 is a 5.56 NATO AR-15-pattern rifle built as a straightforward, budget-friendly platform for range use, training, home defense, or future customization. This example uses a 16-inch barrel with a 1:8 twist rate, giving it a versatile setup for a broad range of common 5.56 and .223 Remington ammunition. The carbine-length gas system keeps the operating layout familiar and proven, while the full-length rifle configuration gives the shooter a stable, easy-handling package without the compromises of an ultra-short build. The front end is fitted with a free-floating quad-rail handguard, providing plenty of Picatinny mounting space for lights, grips, sling hardware, or other compatible accessories while keeping the barrel free from direct handguard contact. Standard AR-15 controls keep operation simple and immediately familiar, and the rifle is equipped with a Vortex SPARC AR red-dot sight for fast target acquisition. The optic also includes its rubber front and rear protective covers, helping protect the lenses during storage and transport. This listing includes the Diamondback DB-15 rifle, installed Vortex SPARC AR red dot with rubber lens covers, and one Magpul Gen 2 PMAG.