BCM® KMR *ALPHA* 9 (KeyMod™ Free Float Handguard)

MSRP: $225.00
Your Price: $211.95
(You save $13.05 )
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BCM® KMR Alpha 9


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 5.6oz!


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"

Actual length when measured to flare is 9.4"

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


Mounting hardware, 2.4oz, for a total of 8.0oz on a 9" 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.***

56 Reviews

  • 5

    Fits my mid length ar15 very well and makes it light and reliable!

  • 5
    Bcm kmod rail

    Love it! Super light weight and strong. Very slim so be careful if you want it to go over a muzzle device!

  • 5
    BCM KMR 9 Alpha

    This is my second KMR. Quality part as usual. Super easy installation. I replaced plastic handguard on a midlength upper with a FSB. I like the traction I get from just the bare keymod cut outs. Any of the attachment methods are fine. Pick your favorite and enjoy.

  • 5
    BCM 9 in hand rail

    Excellent appearance, excellent quality, easy to install. Excellent instructions. Have purchased 3 of these hand rails and would purchase more. I Wish Bravo Company made these for LR .308.

  • 5
    Great handguard

    Goes on pretty easy.
    I'm the kind of geek that really likes this kind of thing:
    The locking screws, need to use a heat gun, etc.

  • 5
    Customer review

    Perfect for the set up I’m running now and much lighter for more maneuverable

  • 5
    Top notch

    My first AR was a BCM years ago, I never even heard of BCM then. The owner of G&R tactical came highly suggested by a friend. So I trusted his opinion when he sold me a BCM and I'm glad he did. Since then I've brought multiple BCM rifles and other BCM parts and accessories. And I've always been impressed with their quality and price. Though I never bought any of their rails until now. I definitely will be buying this rail in different lengths for future builds. The mounting system is extremely rigid and easy to install, small and light which is very nice and as always the quality is top-notch and price is more then fair. The NSR used to be my favorite but not anymore.

  • 5
    Replacement Handguard on Springfield Armory Saint

    The fit, finish and workmanship on the BCM KMR handguard was excellent. Very satisfied with this product.

  • 5
    Nice price for a 10.5" pistol

    Bought this handguard for my 10.5" pistol build. fits perfectly. Easy enough instructions. Love the way it looks. https://imgur.com/cxgU5FA