BCM® Standard 7" 300 BLACKOUT Complete Upper Receiver Group w/ KMR-A5 Handguard

MSRP: $1,059.50
Your Price: $769.00
(You save $290.50 )
Maximum Purchase:
10 units
Barrel Length:
Barrel Style:
300 BLK
Stock Status:

Out of stock

About the BCM® Standard 7" 300 BLACKOUT Complete Upper Receiver w/ KMR-A5 Handguard

  • Continuous taper barrel profile designed for optimal weight, balance, and performance.
  • 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 with this complete upper:

  • KMR-A5 KeyMod™ Handguard.
  • KMSM (KeyMod™ Sling Mount)
  • One 3" Picatinny Rail Section
  • 762/300BLK Flash Hider

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 High Velocity ammo only with a H3 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: 7"
  • Barrel Material: 11595E Spec Steel
  • Barrel Finish: Manganese Phosphate (Mil-Spec A-A-59267)
  • Bore & Chamber: Chrome Lined
  • Weight: 2.2 lbs
  • Twist Rate: 1:7
  • Gas System: Pistol
  • Muzzle Device: 762/300BLK Flash Hider
  • Muzzle Threads: 5/8x24
  • Handguard: KMR-A5

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.***

2 Reviews

  • 5
    Great quality

    Great quality

  • 5
    300 Blk upper

    Excellent upper. Mounted on 5.56 lower with BCM nickel boron bcg and Omega 300 suppressor. Flawless operation. Well done Bravo Company!