Toggle menu
830-362-7999
  • 0
  • Wishlist
  • AR15 Elite
    Reset Search ×
    • 0
    Reset Search ×

      Shop By Category

    • Daily Deals
    • AR-15 Complete Uppers
      • 204 Ruger Uppers
      • 22 ARC Uppers
      • 223 Wylde Uppers
      • 224 Valkyrie Uppers
      • 300 Blackout Uppers
      • 338 ARC Uppers
      • 350 Legend Uppers
      • 450 Bushmaster Uppers
      • 458 Socom Uppers
      • 5.56 Uppers
      • 50 Beowulf Uppers
      • 6.5 Grendel Uppers
      • 6.8 SPC Uppers
      • 6MM ARC Uppers
      • 7.62x39 Uppers
      • 9MM Uppers
    • AR-10 Complete Uppers
      • 25 Creedmoor Uppers
      • 308 Uppers
      • 6.5 Creedmoor Uppers
      • 8.6 Blackout Uppers
    • AR-15 Parts & Components
      • AR-15 Upper Parts
        • Upper Receivers
        • AR-15 Handguards and Rails
        • Barrels
        • Bolt Carrier Group
        • AR-15 Charging Handle
        • Muzzle Devices
        • AR-15 Gas Blocks
      • Lower Receiver Parts
        • Buffer Tube Parts and Kits
        • Lower Parts and Kits
        • Stocks and Pistol Braces
        • Trigger Upgrades
    • AR-15 Lower Receivers
    • AR-15 Pistols
    • Magazines
    • Rifle Slings, Swivels & Bipods
    • Gunsmith Tools & Maintenance
    • Sights & Optics
    • Blemished Parts, Clearance
    • Main Menu

    • About Us
    • Contact Us
    • Privacy & Cookie Policy
    • Sitemap
    • Terms and Conditions
    • Shipping & Returns
    • Blog
    • Gift Certificates
    • Login or Sign Up

    ShopShop

    Pages

  • About Us
  • Contact Us
  • Privacy & Cookie Policy
  • Sitemap
  • Terms and Conditions
  • Shipping & Returns
  • Blog
  • Shop by Category

  • Daily Deals
  • AR-15 Complete Uppers

    AR-15 Complete Uppers

    • 204 Ruger Uppers
    • 22 ARC Uppers
    • 223 Wylde Uppers
    • 224 Valkyrie Uppers
    • 300 Blackout Uppers
    • 338 ARC Uppers
    • 350 Legend Uppers
    • 450 Bushmaster Uppers
    • 458 Socom Uppers
    • 5.56 Uppers
    • 50 Beowulf Uppers
    • 6.5 Grendel Uppers
    • 6.8 SPC Uppers
    • 6MM ARC Uppers
    • 7.62x39 Uppers
    • 9MM Uppers
  • AR-10 Complete Uppers

    AR-10 Complete Uppers

    • 25 Creedmoor Uppers
    • 308 Uppers
    • 6.5 Creedmoor Uppers
    • 8.6 Blackout Uppers
  • AR-15 Parts & Components

    AR-15 Parts & Components

    • AR-15 Upper Parts
      • All AR-15 Upper Parts
      • Upper Receivers
      • AR-15 Handguards and Rails
      • Barrels
      • Bolt Carrier Group
      • AR-15 Charging Handle
      • Muzzle Devices
      • AR-15 Gas Blocks
      • View All
    • Lower Receiver Parts
      • All Lower Receiver Parts
      • Buffer Tube Parts and Kits
      • Lower Parts and Kits
      • Stocks and Pistol Braces
      • Trigger Upgrades
      • View All
  • AR-15 Lower Receivers
  • AR-15 Pistols
  • Magazines
  • Rifle Slings, Swivels & Bipods
  • Gunsmith Tools & Maintenance
  • Sights & Optics
  • Blemished Parts, Clearance

  • Shop by Brand

  • AR15 Elite
  • Shaw Barrels
  • ASC
  • Anderson Manufacturing
  • Palmetto State Armory
  • Ballistic Advantage
  • Magpul
  • DPMS
  • UTG | Leapers
  • Aero Precision
  • View all Brands
    • Main Menu

    • About Us
    • Contact Us
    • Privacy & Cookie Policy
    • Sitemap
    • Terms and Conditions
    • Shipping & Returns
    • Blog
    • Shop By Category

    • Daily Deals
    • AR-15 Complete Uppers
      • 204 Ruger Uppers
      • 22 ARC Uppers
      • 223 Wylde Uppers
      • 224 Valkyrie Uppers
      • 300 Blackout Uppers
      • 338 ARC Uppers
      • 350 Legend Uppers
      • 450 Bushmaster Uppers
      • 458 Socom Uppers
      • 5.56 Uppers
      • 50 Beowulf Uppers
      • 6.5 Grendel Uppers
      • 6.8 SPC Uppers
      • 6MM ARC Uppers
      • 7.62x39 Uppers
      • 9MM Uppers
    • AR-10 Complete Uppers
      • 25 Creedmoor Uppers
      • 308 Uppers
      • 6.5 Creedmoor Uppers
      • 8.6 Blackout Uppers
    • AR-15 Parts & Components
      • AR-15 Upper Parts
        • Upper Receivers
        • AR-15 Handguards and Rails
        • Barrels
        • Bolt Carrier Group
        • AR-15 Charging Handle
        • Muzzle Devices
        • AR-15 Gas Blocks
      • Lower Receiver Parts
        • Buffer Tube Parts and Kits
        • Lower Parts and Kits
        • Stocks and Pistol Braces
        • Trigger Upgrades
    • AR-15 Lower Receivers
    • AR-15 Pistols
    • Magazines
    • Rifle Slings, Swivels & Bipods
    • Gunsmith Tools & Maintenance
    • Sights & Optics
    • Blemished Parts, Clearance
    • Shop By Brand

    • AR15 Elite
    • Shaw Barrels
    • ASC
    • Anderson Manufacturing
    • Palmetto State Armory
    • Ballistic Advantage
    • Magpul
    • DPMS
    • UTG | Leapers
    • Aero Precision
    • View all Brands
    Reset Search ×
    • 0
    • Home
    • AR-15 Complete Uppers
    • 300 Blackout Uppers
    • 16" 300 Blackout Upper - Chrome Moly Medium Barrel - 15" MLOK Rail
  • Daily Deals
  • AR-15 Complete Uppers
    • All AR-15 Complete Uppers
    • 204 Ruger Uppers
    • 22 ARC Uppers
    • 223 Wylde Uppers
    • 224 Valkyrie Uppers
    • 300 Blackout Uppers
    • 338 ARC Uppers
    • 350 Legend Uppers
    • 450 Bushmaster Uppers
    • 458 Socom Uppers
    • 5.56 Uppers
    • 50 Beowulf Uppers
    • 6.5 Grendel Uppers
    • 6.8 SPC Uppers
    • 6MM ARC Uppers
    • 7.62x39 Uppers
    • 9MM Uppers
  • AR-10 Complete Uppers
    • All AR-10 Complete Uppers
    • 25 Creedmoor Uppers
    • 308 Uppers
    • 6.5 Creedmoor Uppers
    • 8.6 Blackout Uppers
  • AR-15 Parts & Components
    • All AR-15 Parts & Components
    • AR-15 Upper Parts
      • All AR-15 Upper Parts
      • Upper Receivers
      • AR-15 Handguards and Rails
      • Barrels
      • Bolt Carrier Group
      • AR-15 Charging Handle
      • Muzzle Devices
      • AR-15 Gas Blocks
    • Lower Receiver Parts
      • All Lower Receiver Parts
      • Buffer Tube Parts and Kits
      • Lower Parts and Kits
      • Stocks and Pistol Braces
      • Trigger Upgrades
  • AR-15 Lower Receivers
  • AR-15 Pistols
  • Magazines
  • Rifle Slings, Swivels & Bipods
  • Gunsmith Tools & Maintenance
  • Sights & Optics
  • Blemished Parts, Clearance
  • Shop by Brand
  • AR15 Elite
  • Shaw Barrels
  • ASC
  • Anderson Manufacturing
  • Palmetto State Armory
  • Ballistic Advantage
  • Magpul
  • DPMS
  • UTG | Leapers
  • Aero Precision
  • View all Brands
  • 16" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Pistol Medium Barrel | Flash Hider | 15" MLOK Rail
  • 16" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Pistol Medium Barrel | Flash Hider | 15" MLOK Rail
  • 16" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Pistol Medium Barrel | Flash Hider | 15" MLOK Rail 16" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Pistol Medium Barrel | Flash Hider | 15" MLOK Rail

    16" 300 Blackout Upper - Chrome Moly Medium Barrel - 15" MLOK Rail

    AR15 Elite

    MSRP:
    Was:
    Now: $219.99
    (You save )
    (4 reviews) Write a Review

    SKU:
    16300BOUAMD1X8CMVPA215MLR
    • AR-15 Charging Handle | Standard Milspec
    • AR-15 Charging Handle | Tactical Extended Latch | Gen 2
    • AR-15 Charging Handle | Tactical Extended Latch | Gen 4
    • AR-15 Ambidextrous Charging Handle | Ambi Latch
    • 5.56/223 Bolt Carrier Group AR-15 | Nitride Milspec BCG
    • 5.56/223 Bolt Carrier Group AR-15 | Nickel Boron NIB Milspec BCG
    • Linear Compensator 5/8 x24 Threads AR-15 | Black
    • Muzzle Compensator 5/8x24 Threads AR-15 | Black
    • Superlative Arms .750” Adjustable Gas Block | Stainless Steel | Solid, Set Screw | Melonite Finish AR-15
    • CMMG ZEROED Adjustable Gas Block .750" | AR-15 LR-308 Steel Black
    • 5.56/223 30 rd Magazine | Magpul | PMAG Gen 2 MOE AMG571-blk
    • 5.56/223 30 rd Magazine w/ WINDOW | Magpul | PMAG Gen 2 MOE
    • 5.56/223 10 rd Magazine | Magpul | PMAG Gen M3 MAG559-BLK
    • 5.56, 223 30 rd Magazine | ASC | Stainless Steel Black
    • 5.56/223 10 rd Magazine | ASC | Aluminum Grey Moly
    • Cerakote | FDE Fat Dark Earth
    • Cerakote | OD Green
    • Cerakote | FDE Fat Dark Earth
    • Cerakote | OD Green

    Adding to cart… category.add_cart_announcement
    Save to Wishlist
    • Facebook
    • Email
    • Print
    • Twitter
    • Pinterest
    • Overview
    • Reviews

    Product Description

    16" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Pistol Medium Barrel | Flash Hider | 15" MLOK Rail

     

    The 300 Blackout isn't just another caliber; it’s a purpose-built solution for the AR-15 platform that rivals the close-quarters effectiveness of the legendary 7.62x39mm. This system thrives with versatility, specifically tuned for subsonic 220gr loads to provide unrivaled suppressed performance or lightweight supersonics for terminal impact. If you're building a dedicated home-defense firearm or a compact hunting rig, a 300 Blackout upper assembly offers the modularity and stopping power required to push the limits of the short-barreled gas gun.

    Our AR15 Elite AR-15 uppers are American Made and machined by manufacturers of mil-spec AR-15 components.  All barrels are individually checked for headspace using Manson go and no-go gauges.

    Specifications: 

    • Upper Receiver: AR15 Milspec forged aluminum upper receiver with forward assist and dust cover assembly installed. Matte black hard coat anodized Mil 8625 Type 3 Class 2. Forged from 7075 T6 aluminum.  7075 Aluminum is superior in strength to 6061 billet aluminum.
    • Handguard: Premium, Lightweight 15" Extended Rifle Length Narrow-Profile AR15 M LOK Handguard. Fit and finish on our line of ergonomical free float rails is outstanding and light weight. M LOK slots run the entire length of our rail at the 3, 6, and 9 o'clock positions. M LOK compatible rail sections and attachments can easily be attached to our handguards which makes adding accessories like sights, bipods, flash lights, grips, lasers, etc. a breeze.  Matte black hard coat anodized Mil 8625 Type 3 Class 2. Milled from 6061 aircraft aluminum.
    • Barrel: 16 inch 300 Blackout Chrome Moly Medium profile Barrel with 1x8 twist. 5/8x24 muzzle threads.  Parkerized Finish. Standard AR15 Barrel Extension w/ M4 feed ramps.  Properly headspaced with Manson Go and No-Go Gauges.
    • Gas Block: .750” Low Profile, Nitride Finish.
    • Gas System: Pistol Length Gas Tube.
    • Muzzle Device: A2 flash hider with crush washer.

    Upper arrives assembled, ready to use and will fit all standard Milspec dimension AR 15 lower receivers.

    This item is NOT a firearm and will be shipped directly to you, no FFL is required.

    Product Videos

    Custom Field

    Product Reviews

    Write a Review

    Write a Review

    ×
    16" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Pistol Medium Barrel | Flash Hider | 15" MLOK Rail
    AR15 Elite
    16" 300 Blackout Upper - Chrome Moly Medium Barrel - 15" MLOK Rail

    4 Reviews Hide Reviews Show Reviews

    • 5
      16 inch upper

      Posted by Sam K on Dec 11th 2025

      Nice little upper and it's lighter than expected which is nice. Only did a cycle test so far and it spits out in the same spot every time. Head spaced it myself with PTG gauges and it checked out perfect with their BCG.

    • 5
      300 BO upper

      Posted by Jake Harrison on Dec 5th 2025

      Excellent upper. Got it dialed in 100 yards and got 1.5 inch groups with PSA AAC vmax ammo. Tightened up nicely with Hornady Black to 1" or slightly less. Accurate.

    • 5
      Just what I needed

      Posted by Byron Ashton on Nov 24th 2025

      Cycles, shoots and performs well. You'll be happy. Oh and don't be cheap on your ears, get the linear comp. You're welcome.

    • 5
      300 BO

      Posted by Brandon Shelley on Nov 17th 2025

      Well constructed upper and was happy with the accuracy for what I paid. Great price on this one. Will be back for another.

    ×
    • Recommended
    • 8.5" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Carbine HBAR Barrel | Flash Hider | 7" MLOK Rail 8.5" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Carbine HBAR Barrel | Flash Hider | 7" MLOK Rail

      AR15 Elite

      8.5" 300 Blackout Upper - Chrome Moly HBAR Barrel - 7" MLOK Rail

      MSRP:
      Was:
      Now: $209.99
      Choose Options
    • 8.5" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Carbine HBAR Barrel | Linear Compensator | 10" MLOK Rail 8.5" 300 Blackout AR-15 Upper Assembly | 1x8 CMV Parkerized Carbine HBAR Barrel | Linear Compensator | 10" MLOK Rail

      AR15 Elite

      8.5" 300 Blackout Upper - Chrome Moly HBAR Barrel - 10" MLOK Rail - Compensator

      MSRP:
      Was:
      Now: $224.99
      Choose Options
    • SALE
      20" 308 AR-10 Upper Assembly | 1x10 CMV Rifle Length HBAR Barrel | A2 Flash Hider | 15" MLOK Rail 20" 308 AR-10 Upper Assembly | 1x10 CMV Rifle Length HBAR Barrel | A2 Flash Hider | 15" MLOK Rail

      AR15 Elite

      20" 308 Upper - Chrome Moly HBAR Barrel - 15" MLOK Rail

      MSRP:
      Was: $359.99
      Now: $309.99
      Choose Options
    • 16" 300 Blackout AR-15 Upper Assembly | SHAW Barrels | 1x7 SS Pistol HBAR Barrel | Flash Hider | 15" MLOK Rail 16" 300 Blackout AR-15 Upper Assembly | SHAW Barrels | 1x7 SS Pistol HBAR Barrel | Flash Hider | 15" MLOK Rail

      AR15 Elite

      16" 300 Blackout Upper - SHAW Barrels Stainless HBAR - 15" MLOK Rail

      MSRP:
      Was:
      Now: $339.99
      Choose Options
    • 18" 223 Wylde AR-15 Upper Assembly | 1x8 CMV Parkerized Mid Length HBAR Barrel | Flash Hider | 15" MLOK Rail 18" 223 Wylde AR-15 Upper Assembly | 1x8 CMV Parkerized Mid Length HBAR Barrel | Flash Hider | 15" MLOK Rail

      AR15 Elite

      18" 223 Wylde Upper - Chrome Moly HBAR Barrel - 15" MLOK Rail

      MSRP:
      Was:
      Now: $224.99
      Choose Options
    ×
    Contact Us
    AR15Elite.com
    Fredericksburg TX 78624

    Phone: 830-362-7999
    Email: sales@ar15elite.com
    Hours: M- F 9am to 4pm Central Time
    Accounts & Orders
    • Wishlist
    • Login or Sign Up
    • Order Status
    • Shipping & Returns
    Navigate
    • About Us
    • Contact Us
    • Privacy & Cookie Policy
    • Sitemap
    • Terms and Conditions
    • Shipping & Returns
    • Blog
    Join Our Mailing List

    Sign up for our newsletter to receive specials and up to date product news and releases.

    • © AR15 Elite
    • | Sitemap