The Core 15 Rifle Systems Tac III M4 rifle is chambered in .223 Remington/5.56 NATO and has a 16" 4150 Chrome Moly Mid-Length Profile Chrome-Lined barrel with a 1:7 twist. It is crafted from Forged 7075-T6 aluminum and it has a 1913 Picatinny rail flat top. It comes with a Magpul MOE 6-Position collapsible stock, Magpul MOE pistol grip, and Magpul 30 round PMAG magazine.
- Action: Semi-Automatic
- Caliber: 223 Remington/5.56 NATO
- Barrel Length: 16"
- Capacity: 30+1
- Safety: Manual
- Weight: 5.9 lbs
- Stock: Black 6-Position Collapsible
- Metal Finish: Black
- Muzzle: A2 Flash Hider
- Receiver Material: 7075 T6 Aluminum
- Sights: A2 Front, Magpul Rear
- Barrel: 4150 Chrome Moly Chrome-Lined
- Twist: 1:7"