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

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

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
    15 kmr handguard

    very nice some what hard to in stall my first bcm hand guard I will be using bcm handguard from now on

  • 5
    This is the second KMR ALPHA 15 rail I’ve bought one for my colt one for my smith and Wesson fits both like a glove

    Great addition for anyone wanting forearm attachments

  • 5
    Best hand guard for your AR!

    I recently purchased the BCM® KMR *ALPHA* 15 hand guard after buying an upper receiver for my son with the 13" BCM® KMR *ALPHA*. The weight reduction over my previous hand guard was noticeable and the feel in hand was a huge improvement. It is a very sleek and slim design and seems extremely rigid.

    Read directions prior to installing, because heating the end of hand guard with a hair dryer was a great pro tip. It is a very tight fit over the barrel nut so heating the hand guard as described made installation much easier. I watched some videos online of people tapping them on with a rubber mallet and it made me cringe.
    Heat it up and I pushed it on by hand. Yes it was some work, but no marring from a hammer and after securing with the 2 cross bolts this thing is solid.

    I have a couple Daniel Defense rails that I have used for years, but I must say, this is my new favorite!

  • 5
    Alpfla Keymod Free float handguard

    Easy (for me) installation. Clear complete directions. Good Kit!

  • 5
    Purchase of another BCM KMR *ALPHA* 15 Handrail

    Top Tier product...won't put anything else of my rifles. If you're on the fence because of cost, this is well worth the expense. Nobody beats BCM for order processing and getting your items shipped.

  • 5
    AR Build

    Hand guard looks Great!! It will look great on my AR build that I am working on.

  • 5
    Awesome handguard

    Like all products from BC, great quality! Great looking handguard and very light. Highly reccomend

  • 5
    Great rail great company

    Very high quality rail at a great price! Very slim profile and light weight. I’m very pleased with all my bravo company products so far and ordering is fast and easy! Great job bravo company I’ll be a constant customer

  • 5
    Built like a tank and super light

    One thing you will always get with bcm is probabaly the best build quality out there, and it really shows with this handguard. So solid and looks great.