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8" 300 Blackout Upper

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8" 300 Blackout Upper


Our 8” 300 Blackout Upper is one of the most compact pre-built uppers available on the market today. This ultra-tight package ensures as much accuracy as possible in one of the most lightweight and shortest AR 15 Uppers imaginable. That’s all thanks to our industry-leading manufacturing and finishing processes, using only the highest quality, mil-spec steels, and aluminum alloys.

Each 300 Blackout Upper we produce starts with a 4150 Chromoly or 416R Stainless steel barrel blank. Every barrel is cut to exacting ISO 9002 quality control standards. We go above and beyond, heat treating each barrel to achieve a Mohs hardness rating of 28 to 32 RC. This provides better accuracy and longer barrel life than even a chrome-lined barrel – saving you money in the process. The result is one of the most accurate 8” 300 Blackout Uppers you can buy, and it’s a helluva price.

Lastly, every 8” 300 Blackout Upper we sell includes a charging handle, chrome-lined BCG, and free-floating Picatinny, M-Lok or Keymod handguard for plenty of rail estate. Simply put, our 8” 300 Blackout Uppers combine the best alloys with superior manufacturing and the best accessories to afford you the best value possible. We’re priced great, but we’re not cheap. We’re just the best bang for your luck (literally).

Buyer's Guides for Additional Product Information:

Read: What is a 300 Blackout Upper

Read: 300 Blackout Upper Buyer's Guide

Read: 300 Blackout Barrels Buyer's Guide

Read: 300 Blackout Barrel Steel Analysis

Benefits of Our 10.5” 300 Blackout Upper

  • Ships directly to your house, no FFL needed
  • Quickly and legally finish any SBR or AR Pistol
  • 1:7 and 1:8 twist rates accurize super and sub loads
  • Mil-spec steel and heat treatment improves accuracy
  • Pre-built and ready to fire out of the box
  • Includes mil-spec, chrome-lined bolt carrier group
  • Includes standard, universal charging handle
  • Can be mated with any standard AR 15 lower
  • Made & constructed in the USA