Fixed Front Sight Base (FSB)

The BKF M4 MOD-0 14.5″ 5.56 NATO FSB rifle is a duty-grade AR-15 built for professional reliability and hard use. Manufactured in the USA with precision-machined 7075-T6 receivers, this rifle exceeds mil-spec standards and features a pinned 14.5″ barrel welded to 16″ for legal compliance. Designed for consistent performance, it is backed by BKF’s lifetime warranty and 1 MOA accuracy guarantee.

The BKF-15 14.5 inch pinned 5.56 NATO rifle is a classic AR-15 carbine built with 100% USA-made components and permanently pinned to a legal 16″ length. Featuring a fixed front sight base and traditional two-piece handguards, this rifle delivers proven reliability and timeless design.

The BKF-15 16 556 FSB rifle is a classic AR-15 carbine built with 100% USA-made components and a clean, no-logo lower receiver. Featuring a fixed front sight base, retro two-piece handguards, and proven BKF reliability, this rifle delivers dependable performance at an affordable price.

The BKF-15 16 556 FSB rifle is a budget-friendly AR-15 built with 100% USA-made components and a clean, no-logo lower. Featuring a fixed front sight base, classic two-piece handguards, and proven BKF reliability, this rifle delivers timeless performance and excellent value.

The BKF-15 20 556 FSB rifle is a full-length AR-15 built with 100% USA-made components and a clean, no-logo lower receiver. Featuring a rifle-length gas system, fixed front sight base, and classic A2 furniture, this rifle delivers smooth operation, accuracy, and proven BKF reliability.