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300-blackoutupper-com: 80% Lowers, Jigs, Build Kits & More! – 80 Lower Jig

300 Blackout Pistol Buyer’s Guide

Building a 300 Blackout-chambered AR 15 pistol is a sort of art. You have to balance that compact, aesthetic quality with the ability to stabilize your pistol and accurately shoot both subsonic and supersonic loads with an acceptable level of accuracy. For a dual-purpose round whose grain count can vary by over 100 grains, and […]

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300 Blackout Barrel Buyer’s Guide

Achieving superior accuracy and reliability with your 300 Blackout rifle, SBR, or pistol requires getting the right barrel assembly – it’s the single most important part of this platform, in fact. Why? Because you’re going to be handling a wide variety of grain counts and loads. If you want to use your 300 Blackout to […]

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300 Blackout and Barrel Steel

There are quite a few different options when it comes to picking what steel alloy your 300 blackout barrel will be made of. First, you’ve got to pick between Chromoly and Stainless alloys, then you have subsets of those alloys that will determine barrel life, accuracy, and cost. For 300 Blackout, the quality of your […]

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Top 5 300 Blackout Barrels

With so many configurations available for 300 Blackout barrels, it’s tough choosing the right one for your build. We’ll go over our top 5 picks based on your rifle, pistol, or SBR build intentions. To be sure, this is not a “good-better-best” sort of top 5 list – we’re simply breaking down our top 5 […]

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Top 5 300 Blackout Uppers

Lots of 300 Blackout uppers are available, and they all serve their own purpose – so which is best for you? With so many options available, and with the idea that 300 Blackout is such a multi-purpose, multi-load cartridge, let’s break down the top 5 300 Blackout Uppers, and why you might want a particular […]

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What Is a 300 Blackout Upper

Great question! It’s a fitting, given the introduction of our new website. To answer that question, let’s dive into a brief history of the 300 Blackout, and how it came to be. In 1990, firearms community veteran J.D. Jones developed the 300 Whisper in his garage. He intended it to be a suppressor-friendly, intermediate rifle […]

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