Colt Firearms M4 FPB 5.56 16.1 Barrel 30-Rounds

Colt M4 FPB Features Engineered with a 16.1-inch 4150 CMV chrome-lined barrel and a 1:7 twist rate the Colt M4 FPB provides optimal bullet stabilization for heavier 5.56 NATO loads enhancing accuracy and reliability across a wide range of shooting scenarios. The direct gas impingement system offers smooth proven cycling while the Geissele MK4 13-inch free-float rail allows for exceptional rigidity and space for AR-15 accessories like lights lasers and vertical grips. The upper and lower receivers are constructed from 7075-T6 aluminum with a Type III hardcoat anodized finish ensuring maximum strength with reduced weight. For enhanced usability and control the M4 FPB includes Magpul MBUS PRO backup sights a single-stage trigger and a reversible safety selector. The rifle's Magpul CTR stock provides AR-15 Adjustable comfort in a 4-position collapsible design while the A2 pistol grip offers a classic and familiar feel. With a 30-round magazine included this rifle is mission-ready straight out of the box. Colt M4 FPB Specifications Manufacturer: Colt Firearms Model: M4 FPB Caliber: 5.56x45mm NATO Type: Semi-Auto Rifle Action: Direct Gas Impingement Capacity: 30 + 1 Barrel Length: 16.1 Barrel Material: 4150 CMV Barrel Finish: Chrome-Lined Twist Rate: 1:7 RH 6 Groove Muzzle Device: A2 Birdcage Flash Hider Upper Receiver: 7075-T6 Aluminum Type III Hardcoat Anodized Lower Receiver: 7075-T6 Aluminum Type III Hardcoat Anodized Rail: Geissele MK4 13 Free-Float M-LOK Grip: Standard A2 Government Stock: Magpul CTR 4-Position Adjustable Sights: Magpul MBUS PRO Front and Rear Trigger: Single-Stage Safety: Reversible Selector Operating System: Direct Impingement Overall Length: 32.5 (Collapsed) - 36 (Extended) Weight (Unloaded): 7.3 lbs