BCM® Standard 9" 300 BLACKOUT Complete Upper Receiver Group w/ MCMR-7 Handguard

The BCM® Standard 9" 300 Blackout Upper offers a compact, suppressor-ready platform with a continuous taper barrel for optimal weight, balance, and accuracy. Features a chrome-lined bore, 11595E steel barrel, and a 7" MCMR free-float M-LOK handguard for enhanced maneuverability and modularity.
Availability: In stock
$831.45

Overview

About the BCM® Standard 9" 300 BLACKOUT Complete Upper Receiver w/ MCMR-7 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:

  • MCMR-7 Handguard
  • MCMR-SM (MCMR Sling Mount)
  • One 3" Picatinny Rail Section
  • 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.

Specs

  • Caliber: 300 Blackout
  • Barrel Length: 9"
  • Barrel Material: 11595E Spec Steel
  • Barrel Finish: Manganese Phosphate per Mil-Spec
  • Bore & Chamber: Chrome Lined
  • Weight: 2.2 lbs
  • Twist Rate: 1:7
  • Gas System: Pistol
  • Muzzle Device: BCM® Comp Mod 1 (762/300BLK)
  • Muzzle Threads: 5/8x24
  • Handguard: MCMR-7