BCM® KMR *ALPHA* 8 (KeyMod™ Free Float Handguard)

MSRP: $220.00
Your Price: $206.95
(You save $13.05 )
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BCM® KMR Alpha 8


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 4.9oz!


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 8.14"

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


Mounting hardware, 2.4oz, for a total of 7.3 oz on a 8" 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.***

32 Reviews

  • 5
    Killer rail

    Badass rail, thanks much guys

  • 5
    Customer review

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  • 5
    Finally a company who knows what they are doing...

    Top Quality, Excellent Fit and Finish, Easy to Install.
    Directions easy to understand, assembly tool included was a bonus. Like the fact that this handguard comes in one inch increments. I would buy again.

  • 5
    Excellent feeling

    Great fit and finish for a custom build. Hand guard has a Ex feeling in your hand and is even easier to install

  • 5
    Alpha 8 keymod

    Can't be any happier, Awesome handguard,low profile well made, several hundred rounds on my AR pistol build now, customer for life ! All my builds will run BCM!!!!

  • 5
    Customer review

    Review body is empty

  • 5

    Great, super tight fit. Exactly what I wanted. Superb materials and craftsmanship.

  • 5
    Customer review

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  • 5
    8 KMR

    Love it , simple, clean and light . My only complaint is that I wish they would have made it flush / even with the gas block . Like they did for the mid lengthe 10 kmr . Other than that fantastic .