The Frontline QR-10.5 is equipped with a 10.5-inch carbine-length barrel chambered in 5.56. The barrel and low-pro, carbine gas system are protected by Anderson’s 9.5” Free-Float Quad-Rail Handguard with Picatinny rails located at the 12, 3, 6 and 9 o’clock positions throughout the length and four QD sling sockets at the 3 and 6 positions (two on each side, front and rear of rail). This rifle also hosts an H2 weight buffer system, Magpul K2 Grip and BSL Arm Brace.
Firearm Features
- Carbine Length Gas System
- 9.5″ Quadrail Handguard
- Forged 7075 T6 Aluminum Upper and Lower Receivers
- 4150 Chrome Moly Vanadium Barrel
Firearm Specifications
- Manufacturer: Anderson Manufacturing
- Model: B2-K870-AP01
- Caliber: 5.56mm
- Barrel Length: 10.5″
- Twist Rate: 1:7
- Finish: Nitride Finish
- Grips: Magpul K2
- Sights: None Full-Length Picatinny Rail
- Magazine Capacity: 30-Rounds
- Additional Features: A2 Flash Hider




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