BCM KeyMod Picatinny 4″ Nylon Rail Section – Black

The Bravo Company Mfg / BCM KeyMod Picatinny rail section is a 4-inch polymer rail designed to add a standardized Picatinny mounting surface to KeyMod-equipped handguards. It uses corrosion-resistant stainless steel mounting hardware and is produced to Mil-Standard 1913 Picatinny specifications. The section features a snag-resistant profile and a self-contained assembly to reduce the chance of losing hardware during installation or use.

Key Specifications

• The rail length is 4 inches.
• The material is lightweight impact-resistant polymer (nylon).
• The mounting hardware is corrosion-resistant stainless steel.
• Manufactured to Mil-Standard 1913 Picatinny specifications.
• Designed to fit all KeyMod interface mounting surfaces.
• Features a snag-resistant design while retaining Mil-Standards specs.
• Includes a self-contained assembly that reduces the risk of lost mounting hardware.
• Recommended maximum torque for polymer KeyMod fasteners is 20 in/lbs.
• Color/finish listed as Black.

This compact BCM rail section provides a low-profile Picatinny surface where you need it on KeyMod handguards, letting you add non-load-bearing accessories with minimal weight penalty. Its polymer construction and stainless hardware balance durability and corrosion resistance for practical, everyday use.