The BCM Aluminum KeyMod Rail Section (brand part no. BCM-KMR-1913-A4) is a 4-inch Picatinny rail section machined from hard-anodized aircraft aluminum alloy, built to carry load-bearing accessories that BCM’s nylon rail sections are not rated for. It meets Mil-Standard 1913 Picatinny Arsenal specifications with a snag-resistant profile and uses corrosion-resistant stainless steel mounting hardware in a self-contained assembly so nothing gets lost during installation. Finished in black and fitting any KeyMod interface, it is the stronger option for mounting foregrips, bipods, or other accessories that see real mechanical load.

Key Specifications

• Measures 4 inches in length.
• Machined from hard-anodized aircraft aluminum alloy.
• Rated for load-bearing accessories, unlike BCM’s nylon rail sections.
• Machined to Mil-Standard 1913 Picatinny Arsenal specifications.
• Uses corrosion-resistant stainless steel mounting hardware.
• Built with a self-contained assembly that keeps mounting hardware from being lost.
• Classified by BCM as a KeyMod rail section for direct attachment.
• Finished in black to match most duty and competition builds.
• Fits all KeyMod interface mounting surfaces.

Frequently Asked Questions

Can this rail section carry load-bearing accessories? Yes, unlike BCM’s nylon rail sections, this aluminum version is rated for load-bearing use such as foregrips and bipods.

Does it fit any KeyMod handguard? Yes, it fits all KeyMod interface mounting surfaces.

What hardware is included? Corrosion-resistant stainless steel mounting hardware in a self-contained assembly.

Buy the BCM Gunfighter Aluminum KeyMod Rail Section, 4-Inch, Black

Add a load-bearing rail section to your KeyMod handguard from Bravo Company Mfg / BCM, part of our gun accessories selection. Order it from our Lubbock, Texas gun shop for fast, insured shipping.