BCM® Standard 16" 300 BLACKOUT Complete Upper Receiver Group w/ KMR-A13 Handguard

MSRP: $1,092.50
Your Price: $825.45
(You save $267.05 )
Maximum Purchase:
5 units
300 BLK
Barrel Length:
Barrel Style:
Stock Status:

Out of stock

About the BCM® Standard 16" 300 BLACKOUT Complete Upper Receiver w/ KMR-A13 Handguard

  • Continuous taper barrel profile designed for optimal weight, balance, and performance.
  • Barrel profile fluted toward the rear near chamber area - Increases strength and heat dissipation.
  • Tapered barrel profile out front, for easier maneuverability.
  • No sharp handguard cap shoulder for improved barrel harmonics and improved accuracy.
  • Muzzle threaded in standard 30 cal (5/8x24).

Whats included:

  • Includes KMR-A13 KeyMod™ Handguard.
  • Includes KMSM (KeyMod™ Sling Mount)
  • Includes One 3" Picatinny Rail Section
  • Includes BCM® Comp Mod 1 - 762/300 BLK

BCM® has taken great care to ensure the best possible performance and interchangeability. However, due to the large operational range of 300 Blackout ammunition in the market place, BCM® cannot guarantee function will all ammunition types in all conditions. These barrels were designed to run with a H3 buffer with high velocity ammo.

If running subsonic ammunition, it is recommended to run your suppressor and a carbine buffer. Fine tuning may be required in limited instances based on ammo and buffer choices that work best for the desired application. BCM® also recommends running the Crane O-ring (provided with all BCM® Bolt Carrier Groups) over the extractor with 300 Blackout.


  • Caliber: 300 Blackout
  • Barrel Length: 16.1+"
  • Barrel Material: 11595E Spec Steel
  • Barrel Finish: Manganese Phosphate (Mil-Spec A-A-59267)
  • Bore & Chamber: Chrome Lined
  • Weight: 3 lbs
  • Twist Rate: 1:7
  • Gas System: Carbine
  • Muzzle Device: BCM® Comp Mod 1 (762/300BLK)
  • Muzzle Threads: 5/8x24
  • Handguard: KMR-A13

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.***

54 Reviews

  • 5
    Vickers tactical recamended

    I watch vickers on YouTube. He swears by bcm. I found 300 blackout uppers as cheap as $300. But i went with bcm. I spent a lot more then i wanted to and i had my doubts. I built my 300 blackout and i will say it was money well spent. The fit and finish were prefect. You can feel the quality in every piece. Reliable, accurate, and just the over all package gives you a weapon that feels and acts like it is 3x the price. I also got the 300 bolt to go with it. I'll be back for my next build.

  • 5
    BCM Quality

    I ordered from BCM based first on quality, but also the fact that unlike other on-line based manufacturers their products are IN STOCK. BCM also ships fast and has great customer service. So they may be a few dollars more than similar products, BCM offers chrome lined barrels and high quality BCG components. Review the details and you will be impressed! BCM means quality.

  • 5
    300 BLK Upper

    I never take time to write reviews, but I am making an exception here. Flawless function. Extreme accuracy. Light weight. Great for using subsonic ammo. You can purchase a less expensive 300 BLK upper, but do yourself a favor and go with BRAVO. You will live longer with a gun that works.

  • 5
    Customer review

    Review body is empty

  • 5
    Exceeded my expectations

    Stellar quality and function, getting 1" groups with Fiocchi 125-grain SST.

  • 5
    Excellent upper

    Very happy with this upper I think is one of the best in the market.

  • 5
    Quality without Compromise

    The more I buy from BCM the more impressed I become - including complete uppers, lowers and parts. Smartly designed products with impeccable manufacturing and quality control. Outstanding communication and order tracking. Hell even the packaging blows me away - expertly padded, boxed and meticulously taped with a bunch of free swag included! And yes tape! That's real attention to every detail. I'll be a BCM customer for a long time to come!

  • 5
    Learned my lesson

    This makes the second time I've had to replace cheaper made parts with a BCM part. The difference in materials is amazing. Bravo's Customer Service is second to none and they are always willing to answer even the dumbest of questions.

  • 5
    300 blackout upper

    Very good experience. Fast ,painless and professional