BCM® KMR *ALPHA* 13 (KeyMod™ Free Float Handguard) Flat Dark Earth

MSRP: $240.00
Your Price: $224.95
(You save $15.05 )
Maximum Purchase:
5 units
Stock Status:

Out of stock




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 7.8oz!


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"

Actual length when measured to flare is 13.4"

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

Mounting hardware, 2.4oz, for a total of 10.2oz on a very long 13 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 www.P65Warnings.ca.gov

***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit www.p65warnings.ca.gov.***

23 Reviews

  • 5
    Excellent ergonomics, lightweight -- great product

    Bought this after shooting my buddy's AR 15 SBR, which has the KMR. Replaced my Daniel Defense SLiM Rail 12", which is pretty good. BCM's KMR has much better ergonomics--especially important for those who like to grip forward on the barrel without additional grips (FGA, gangster, etc.). It's lighter, too. I've shot several M4s/AR15s with a variety of grips; BCM's KMR is the best. I paid a pretty penny between purchasing the KMR and having it Cerakoted to match the Daniel Defense FDE (flat dark earth) color. It's worth it. (DD's FDE color is proprietary, but Cerakote sells it for $30.)

  • 5
    Nice and tight!

    I have installed many "high end" handguards, this one fits perfectly. Cerakote is nice and even, no runs or drips. Feels very good in your hand. Fit is very tight into the barrel but it does go, just take your time. I would highly recommend this rail. Fitment to the upper receiver, aero precision was perfect. If you plan on shooting a lot, I would recommend a glove, around 150 rounds it started getting warm, by 200 rounds is was hot

  • 5
    KMR Alpha FDE Handguard

    Man this thing is flipping sweet! It was a breeze to install is heavy duty and build solid. I love it! BCM all the way!

  • 5
    Light, fast, strong

    BCM makes the best keymod system out there. Yeah, I've read the Crane "eval" on keymod vs mlok. Since I don't ride in landing craft or drop my weapon from the back of a truck on steel plate six times, it will serve me just fine.

  • 5
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  • 5

    Super light, feels great, looks great, and easy to install

  • 5
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  • 5

    Best damn handguard there is , light weight , smooth exterior, would highly recommend!!!!

  • 5
    Good product and fast shipping

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