BCM® MCMR-15 (M-LOK® Compatible* Modular Rail)

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

Out of stock

BCM® MCMR-15 (M-LOK® Compatible* Modular Rail)

Featuring the same industry leading barrel nut and lock up design as originally introduced on BCM's evolutionary KMR handguard, the MCMR Series of handguards gives the shooter modularity in the M-LOK platform.

This proprietary patented mounting system (US Patent 8904691), includes a mechanical index to the 12:00 rail and positions mounting hardware to mitigate the movement caused by heat generated by the weapon system.


  • MCMR features M-LOK Compatible mounting system.
  • Free Float Handguard eliminates loads from barrel, reducing the deflection for more accurate shooting.
  • Precision Machined Aerospace 6061-T6 Aluminum Alloy, for high strength and lightweight.
  • Proprietary engineered profile offers additional cross sectional strength.
  • Steel Barrel Nut (same KMR, MCMR, and QRF series), to resist movement under heat.
  • Hard Coat Anodized per Mil-A-8625F, Type III, Class 2
  • Handguard alone weighs 9.2 oz
  • Handguard mounting hardware 2.3 oz
  • Includes BCM M-LOK Compatible Sling Mount, (FREE for a limited time)
  • 1.3" Inside Diameter
  • 1.5" Wide

Actual length when measured to flare is 15.0"

Designed to be used with pistol length, carbine length, mid length, or Mil-Spec M16 rifle length gas systems; all with a low profile gas block.


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


Bravo Company MFG, Inc. US Patent 8904691

Please note: Nylon/Polymer Picatinny rail sections are for NON-load bearing accessories only (grips, hand stops, light mounts). For load bearing accessories (bipod mounts, sling mounts, vertical grips, barricade supports), we recommend aluminum Picatinny rail sections. Do NOT exceed 20 in/lbs. when securing fasteners on Polymer accessories. Aluminum Picatinny rail sections may be torqued to 30 in/lbs.

*M-LOK® is a registered trademark of Magpul Industries Corp.


***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.***

109 Reviews

  • 5
    BCM MCMR-15

    Excellent item. I used it to build an upper recently and would use one again.

  • 4
    15” m lok rail

    Rail was damaged when I got it but was replaced with great customer service

  • 5
    Baddest Rail..

    I wasn’t sure how I’d feel about this rail replacing a DD MFR, but after putting this on, and getting rounds down range I am confident in this product. Durable, secure, and ergonomic (smaller overall diameter, and angles) make this a superior handguard rail. Thanks BCM!

  • 5
    Mlok handguard

    The best hanguard, easy to install

  • 5
    MCMR-15in rail

    Excellent, well made product.

  • 4
    Good but not great.

    I guess with all the hype of advertising i expected too much. Dont get me wrong, its a nice Handguard but not as good as i was expecting. Ive built more than my share of AR's and in my opinion this item is over priced for what you get. I can get a Strike Rail or Gridlok or Midwest Industries unit for the same money or less and have a far superior piece of equipment. This Handguard is light but not as strong as the aforementioned brands. Made in the USA & by better and is very important to me but so is strength and versatility. Nice product but not great, especially for the price.

  • 5
    Ar15 mlock handguard

    Strong, perfect fit and finish, quality piece.

  • 5
    Simply the best

    These are the best handguards available, period. I got lucky and found one in-stock on the BCM website when all other vendors were out of stock. Light, tight, comfortable, and durable. I tried to "mix it up" going with a competing, 6 o'clock tightening lightweight rail and they are all trash. Stop looking elsewhere and just buy these rails.

  • 5
    Top shelf low profile rail

    This is my go-to rail for a low profile type build. Very strong, low profile, fairly light weight and looks sharp. If you're lucky enough to find a BCM upper to match get it, they make the best uppers for accuracy IMO.