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

MSRP: $250.00
Your Price: $234.95
(You save $15.05 )
Maximum Purchase:
5 units
Stock Status:



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

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.***

25 Reviews

  • 5

    As you know y’all make one of the best handguards on the market. I did run into a problem, I didn’t have a heat gun or blow dryer at my shop. So I put the handguard on the dash board of my pickup. It didn’t take long for the handguard to heat up in the West Texas heat. I slipped the handguard easily over the barrel nut, with a few hand bumps, and it fit well. Thank you again for making a product with high quality and in the USA. I have been fighting buying BCM products, because I thought they were over priced. I now understand why the products are priced the way they are. Thanks Again!

  • 5
    New rail

    Love this rail, it cut down on the forward weight on the rifle considerably. The construction is superb and the barrel nut/rail bolt combination are outstanding.

  • 5
    Customer review

    Review body is empty

  • 5
    New tool

    This matched up with a 16" barrel I just put on my BCM upper. The previous barrel was not free floated and I wanted to improve handling. What a nice change. Accuracy is very good (with a RD) and the KeyMod handguard is superb. Supplied barrel nut and locking screws make a solid set up and very easy for a once in a while gunsmith to install. BCM nailed this entire project for me.

  • 5
    Customer review

    Review body is empty

  • 4
    Very strong

    Follow the instructions and you will be fine.

  • 5

    Fit, Finish and QC, are all excellent.
    Great choice to get rifle length sight radius with irons or BUIS.

  • 5
    Best rail

    I love this rail. This is the second one, and it is the best!

  • 5
    Light, Tight, and ready to fight.

    Perfect for slaying THOTS.