Bravo Company KeyMod Rail (BCM® KMR *ALPHA* 15) (KeyMod™ Free Float Handguard)



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Bravo Company KeyMod Rail (BCM® KMR Alpha 15)

All the advantages and features of Bravo Company s KeyMod™ Rail, now available in 100% aluminum

Manufactured from aluminum, it is lightweight yet durable. Also featuring a proprietary patent-pending mounting, indexing and lock-up system that mitigates 12:00 rail movement under heat generated from the barrel nut.

Handguard alone weighs 8.6oz!

1.3 Inner Diameter

1.5 OUTSIDE flat to flat.

Handguard flares forward (towards muzzle end) at the 3 and 9 O’clock positions approximately 1/4″

The actual length, when measured to flare, is 15.0″

The KMR barrel nut will fit over all mil-spec diameter barrels (max of 1″)

Mounting hardware, 2.4oz, for a total of 11oz on a very long 15 rail.

The KMR Alpha is hardcoat anodized for corrosion resistance as well as to maintain a non-reflective finish.

The KeyMod interface system was developed by Eric Kincel (now the Director of BCM’s product development team) to work in parallel with the current Picatinny system. In many applications, it will advance modularity past the current 1913 rail system.

The BCM KMR Alpha also allows for a larger range of modularity offering 4 different offset mounting positions between traditional 3,6,9, and 12:00 positions.

In the most basic of applications, the KeyMod system allows for universal modularity between various manufacturers of accessories, and accessory rails. A big win for the trigger puller. As the industry advances the modular accessories will mount directly to the KeyMod instead of Picatinny, allowing for a lighter, cleaner, and less bulky weapon system.

*Includes BCM KeyMod Sling Mount

Please note: Nylon/Polymer Picatinny rail sections are for NON-load bearing accessories only. For load-bearing accessories, we recommend aluminum Picatinny rail sections. Do NOT exceed 20 in/lbs. when securing KeyMod Fasteners on Polymer accessories.

Aluminum Picatinny rail sections may be torqued to 30 in/lbs.

Installation manual for the BCM® KMR Handguard

WARNING: This product can expose you to chemicals including Cumene and Titanium Dioxide, which is known to the State of California to cause cancer. For more information, go to

R&B Arms is your #1 source for Firearms Parts & Accessories, including the Bravo Company KeyMOD Rail. Can’t find what you’re looking for? Contact us today for special orders and custom products.


Raw, OD Green, FDE, Black, Sniper Grey


RAW, OD Green, FDE, Black, Sniper Grey


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