Colt M4 FPB 5.56 NATO 16.1" Black Geissele Rail 30+1 LE6920-FBP2

Colt M4 FPB

The Colt M4 FPB is a premium law enforcement-inspired AR-15 rifle chambered in 5.56 NATO, building on the legendary LE6920 platform with tactical upgrades for enhanced performance. Featuring a 16.1" chrome-lined 4150 CMV barrel with 1:7 twist, Geissele 13" MK4 free-float M-LOK rail, and Magpul MBUS PRO backup sights, it delivers military-grade reliability and modularity in a durable, black hardcoat anodized package weighing 7.3 lbs.

Key enhancements include direct gas impingement operation for smooth cycling, reversible safety selector for ambidextrous use, and a Magpul CTR 4-position adjustable stock paired with A2 pistol grip for customizable ergonomics. The forged 7075-T6 aluminum receivers with forward assist and dust cover ensure rugged longevity, while the single-stage trigger provides crisp, consistent pulls for precise shot placement.

Designed for duty, defense, competition, or sport shooting, the M4 FPB excels in scenarios demanding quick target transitions, accessory integration, and dependable operation under stress. Its proven Colt craftsmanship, premium rail and sight upgrades, and included 30-round PMAG make it an outstanding choice for shooters seeking a battle-ready rifle that balances tradition with modern tactical capability.

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