want to ditch that buffer tube once and for all? Got an AR-9 to do it? We’re covering how to put together — or swap your current upper for — a bufferless 9mm upper! These instructions apply for our 5″ right-side charging bufferless upper assembly. NOTE: At this time, only the 9mm AR platform is…
We covered how the AR-15’s gas tube length affects dwell time, which can also cause the rifle or pistol to be over-gassed or under-gassed. Is your AR short-stroking or, inversely, producing excess felt recoil and throwing spent brass 30 feet across the range’s lanes? This is easy to diagnose. Let’s review. What is “Over-/Under-Gassed”? The…
Why is the M4/Government barrel so popular? What are all the available barrel profiles, and which one should you pick? Is one truly the best, overall? Let’s discuss. What is A Barrel Profile? Why Does it Matter? The profile of an AR-15 barrel refers to the barrel’s thickness and shape. A barrel’s profile determines its…
Whether you’re breaking in your barrel for the first time — which you absolutely should do, if you want the best accuracy and barrel life possible — or you’re coming back from a regular ole’ range day, it’s imperative you swab your bore, clean that rifling, and stow your rifle or pistol free of fouling….
Your AR-15’s probably more accurate than you. But you can mitigate your skill issue and increase your accuracy by installing an utterly simple and proven device: The forward grip. A quality foregrip improves accuracy through better control of the muzzle, which also provides good recoil mitigation. But there’s a common problem facing the venerable foregrip….
Finished building your custom AR-15? Bought a new barreled upper or an all-new rifle? Trying to maximize your accuracy and land some sub-MOA groupings at the range? Then you’ve got to follow the steps below. Why You Should Break in Your Barrel Sure, you’ve bought plenty of things that came with some sort of “break-in”…
The AR-15 is one of the most popular firearms bought, sold, and built by gun owners in the United States. Tens of millions of rifles, SBRs, and AR-type pistols are in circulation — and it’s because of its popularity that Eugene Stoner’s invention has been riddled with plenty of myths and false. AR-15 FAQs Let’s…
Building an AR-15 is easy ( here’s how!). You don’t need to fabricate any parts, and virtually all parts of the upper and lower assemblies can be put together with standard tools available to the average gun owner. But putting together an AR-15 the right way requires avoiding some common — and time-consuming, potentially costly…
If you were looking up how to build an AR-15 upper, or how to install a new gas block, you might’ve come across this topic: Does your AR-15 barrel need dimples for the gas block’s set screws? What is dimpling, anyway? Let’s cover it. What Are AR-15 Barrel Dimples? Barrel dimples are small indentations made…
Long gone are the days of just buying a generic phosphate-coated, “mil-spec” bolt carrier group. Dozens of combinations of new steels and coatings have hit the market. But some steels and coatings might not be ideal. Others provide genuine improvements in bolt life, reliability, and ease of cleaning. So, which AR-15 bolt and carrier combo’s…
DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-Lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.
