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

MSRP: $200.00
Your Price: $189.95
(You save $10.05 )
(22 reviews) Write a Review
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.***

22 Reviews

  • 5

    Posted by Michael Disney on Aug 20th 2019

    This rail system was e exactly what I was looking for. Came packaged well. I will be buying again.

  • 5
    BCM KMR *ALPHA* 13

    Posted by Mark Price on Jul 22nd 2019

    This is the perfect Hand guard / Rail system, light weight slim and feels great in hand. would like to see the price come down a little, I own 3 of these and they are Awesome!

  • 5
    KMR 13”

    Posted by Matt B on Jul 17th 2019

    Really love this hand guard. Super thin so you can get a good purchase on the front of the rifle. The 13” is the prefect length for me to grip placement I was looking for without excess weight.

  • 5
    Extremely satisfied

    Posted by Brad S. on May 8th 2019

    Great handguard that is light, meets its intended purpose and looks sweet. So sturdy and solidly built. Somewhat difficult to install due to the tightness, but provides the peace of mind that it will not loosen or shift. Could not be happier.

  • 5

    Posted by Nathaniel Lee on Apr 12th 2019

    Review body is empty

  • 5
    Best Floating Rail on Market IMO

    Posted by Thomas Frey on Apr 10th 2019

    Cannot get a better rail system or uppers for the money than BCM.


  • 5
    KeyNod free float hand guard

    Posted by Micah Haile on Apr 10th 2019

    First timer installing a free floating hand guard. Super easy installation and good instructions. Love the weight and the quality American made product, 10/10. Will recommend.

  • 5
    Love the new FDE on these

    Posted by G on Jan 7th 2019

    My first FDE KMR was a ten inch that I bought a year ago and it was more of a brown color than this; very similar to Aero Precision's FDE. But the one I got this time is more tan colored and matches BCM's FDE plastic and is a near perfect match to Radian and Warne's FDR. My rail had a bit of blemish on the left hand side. I contacted BCM and they promptly offered a replacement. Instead, we settled on me getting refunded my shipping costs for the order. I thought that was perfectly appropriate since I did not feel it warranted a replacement. Love Bravo, will continue to be a customer.

  • 5
    Excellent ergonomics, lightweight -- great product

    Posted by Scott Oelke on Jul 21st 2018

    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.)