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    BCM-URG-300BLK-9-MCMR-8 BCM Standard 9" 300 BLACKOUT Upper Receiver w/ 8" MCMR Rail

    Manufacturer: Bravo Company
    SKU: BCM-URG-300BLK-9-MCMR-8
    Manufacturer part number: BCM-URG-300BLK-9-MCMR-8
    Availability: Out of stock - Currently No Backorders
    $639.95
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    Complete Upper Features:

    • BCM® 300 Blackout Upper Receiver Groups
    • 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.
    • Includes MCMR-8 Handguard.
    • Includes MCMR Sling Mount
    • Includes One 3" Picatinny Rail Section
    • Includes BCM Comp Mod 1 - 762/300 BLK

    Specs:

    • Caliber: 300 Blackout
    • Barrel Length: 9"
    • 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: BCM Comp Mod 1 762/300BLK
    • Muzzle Threads: 5/8x24
    • Handguard: MCMR-8

    Note: These barrels were designed to run with a carbine buffer with subsonic ammo and a H3 buffer with high velocity ammo. 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.