BCM® KD4 Spec Complete Upper Receiver Group w/ MCMR-13

MSRP: $1,240.95
Your Price: $907.95
(You save $333.00 )
Maximum Purchase:
5 units
Stock Status:

Out of stock

About the BCM® KD4 Spec Complete Upper Receiver w/ MCMR-13

KD4 Upper Group with twist rate designed for 77 grain Black Hills ammunition.

Upper Group features the BCM® SS410 16" Mid Length Upper Receiver Group w/ BCM® MCMR-13 Handguard, 1/7.7 Twist Ionbond Finish on barrel.

"Black Hills Ammunition has been making the most accurate and lethal 5.56 cartridges for years. In particular, their 77 grain OTM or MK 262 variants as its known in the military has performed without fail for over 20 years. I have used it myself and consider it lifesaving equipment.
As a military sniper I came into service when BH 77 grain was gaining favor with my community and also when my community began the concept of what's now known as the MK 12 5.56 light sniper rifle.
Over the years and through many rounds, testing and evaluations I, along with others, discovered that a twist rate of 1/7.7 is the absolute best for optimizing performance from Black Hills 77 grain ammunition. Now thanks to BCM® anyone can buy a complete upper tailor made for use with BH 77 grain variants."
Kyle Defoor
June 2017

About Kyle Defoor

Kyle Defoor is a professional shooter who teaches firearms and tactics to military, law enforcement, and civilians. Specializing in pistol, carbine, urban sniper, and CQB, Kyle gained his knowledge from decorated combat service in multiple war fronts as a special operator and as one of the first and premier tactical trainers in the world. An active motorcyclist, hunter, climber, runner, and waterman he can be seen on multiple TV shows, magazines, websites, and on ranges worldwide.

Please visit Defoor Proformance Shooting

Shop Related Products:

Want to see more upper receivers? Click the links below to view more BCM® AR complete uppers!


Bravo Company builds: Life Saving Tools™
Copyright 2023 Bravo Company MFG, Inc.
***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.***

Videos Hide Videos Show Videos

9 Reviews

  • 5
    Absolutely fabulous

    superior craftsmanship throughout. great balance. Very accurate

  • 5
    KD4 Spec Upper

    Crusher ⚡️⚡️

  • 5
    KD4 upper

    Fast shipping as always. Upper is exactly what I was after to streamline the fleet . Excellent

  • 5
    Customer review

    Awesome, thanks

  • 5
    Great Upper at a Great Price

    I love this upper, it is light and accurate. It also costs less than other quality recce uppers on the market.

  • 5
    KD4 upper

    The BCM rails are a great profile and the 1:7.7” barrel shoots excellent. Through the first 400 rounds every group on paper has been sub-MOA with the 77 gr Sierra bullet. I’ve only shot it to 300 so far, but the rifle is maintaining 2.5” groups at that range. I couldn’t ask for a better upper in terms of weight, handling, and precision!

  • 5
    Outstanding upper

    Had this upper for about 6 months now well over 1k rounds, no malfunctions, smooth shooter and very very accurate. 400-600 all day long. Ive even been able to hit a 1000 yard target with this upper (may have been luck). If you are thinking about buying this upper stop thinking and just do it, you wont regret it!

  • 5
    Great upper

    Quick delivery and great quality from BCM again.
    I placed this upper onto my BCM lower and hit the range. Zeroing it in, I was struggling to tell if I was getting hits while my buddy on the spotting scope kept telling me he could only see one hole.
    There was a reason for that.
    When we walked up to check the target, all 5 shots were in one ragged hole.
    Great quality, just what I've come to expect from Bravo Company.

  • 5
    Customer review

    quality product