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FN America
Overview
The FN AR-15 BB M4 Barrel features a 14.7-inch length and an M4 profile, making it a solid choice for builders looking to optimize performance and balance in their AR-15 builds. Designed for the 5.56 NATO caliber, this barrel operates with a carbine-length gas system, which helps ensure reliable cycling and reduced recoil. The barrel is finished in a black manganese phosphate coating, providing durability and resistance to wear. This barrel commonly appears in tactical and lightweight builds, where maneuverability and quick handling are key considerations.
Specifications
Available Merchants(6)
Prices checked
Price Alert
Price and stock
Availability is good for the FN America FN AR-15 Bb M4 Barrel 14.7 Carbine 5.56mm: it was in stock at one retailer or another nearly every day in September 2026, and today 4 of the 6 retailers we track have it in stock. The best price drifted down from $241.50 to $226.49 over September 2026 without a real sale. Buying today, the lowest price is $226.49 at Ammunition Depot, which matches the best price we saw in September.
Prices checked · refreshed daily across 37 retailers
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