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

MSRP: $250.00
Your Price: $234.95
(You save $15.05 )
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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"

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

***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.***

277 Reviews

  • 5
    Customer review

    Review body is empty

  • 5

    I’m very happy with the product in fact I prefer BCM to any other products. Thanks

  • 5
    Quality product

    Only took a few days for my handguard to come in the mail, installation instructions are detailed and easy to follow. Great product, very happy with my purchase.

  • 5
    Great product.

    Get product from the fit and look. Will definitely continue buying your products. Anyway I can get some more BCM stickers? Love them!!

  • 5

    Great product. Easy to install

  • 5
    Customer review

    An excellent product well made and brilliant on design

  • 5
    Great hand guard

    I like the way bcm designed the free float hand guard with keymod holes in 7 places. It makes accessories very easy to place without the need for an offset fitting. The hand guard is great quality material and holds up well

  • 5
    Customer review

    To start, the parts I ordered, came very well packaged! Nothing damaged!
    No parts missing! All the parts arrived as advertised! The instructions were well laid out! Installation was easy! Pricing was very resaonable! Should others ask about my free float hand guard, I can easily reccomend your products!!! Thank you all, and have a great Memorial weekend!!!
    William 'Wink' Malcevicz

  • 5
    Awesome handrail!

    This handrail is fairly priced and is super light! I never knew that you could get a 15” keymod rail that weights just 11 oz with hardware! Epic addition to my AR and will get again for another build!