7 Best AR-10 Upper Receivers [2026]
A complete AR-10 upper receiver is the fastest way to turn a multi-cal lower into a hard-hitting 7.62 NATO rig. These are the best uppers we trust for hunting, precision, and long-range builds.
AR-15 Barrel Types: The Ultimate Guide to Materials, Profiles, and Performance
Are you piecing together your next AR build or swapping out that factory barrel for something with a bit more bite? Well, brace yourself, because diving into the world of AR-15 barrel types is like trying to drink from a firehose—endless specs, profiles, and metallurgy jargon coming at you from every direction. But fear not!…
Aero Precision M4E1 Upper Receiver Review: Best Bang for Your Buck?
The Aero Precision M4E1 Upper Receiver has cult-like status among AR builders for good reason. Here’s our hands-on review — what it nails, where it cuts corners, and whether it’s worth the price.
What is an Upper Receiver? [The History & Different Types]
If you’re new to the world of AR-15s and firearms, there’s a lot of terminology to become accustomed to. One of those keywords you’ll hear a lot of talk about is the upper receiver. The quality of an AR-15’s upper receiver is integral to its function, accuracy, and modularity, which ensures the firearm’s reliability in…
Forged vs Billet AR Lowers: What’s the Difference?
Forged vs billet AR lowers — which one actually matters for your build? Here’s the real difference in cost, durability, weight, and the specific scenarios where one wins.
What is a Stripped Lower Receiver?
A stripped lower receiver is the ATF-regulated part of any AR-15 — the part with the serial number, the part you buy through an FFL. Here’s what it is, why it matters, and how to choose one.
7 Best AR-15 Stripped Lower Receivers [2026]: All Budgets
Every AR build starts with the lower. These are the billet, forged, and polymer strippeds worth starting a build on — plus the ones we’d avoid even at their discount price.
The 7 Best AR-15 Barrels to Upgrade Your Rifle in 2026
The barrel is the single biggest accuracy variable in any AR-15 build. These are the barrels we trust to shoot sub-MOA — from budget 4140 steel to match-grade stainless.
9 Best AR-15 Complete Upper Receivers for 2026: Precision, Home Defense & More
From 5.56 general-purpose builds to .300 Blackout CQB and 9mm PCC uppers, a quality complete upper is the fastest way to add a new caliber or build a second rifle. Here are the nine we trust.
What is an M4 Bolt Carrier Group?
If you’re new to the world of firearms, you’re most likely familiar with the AR-15. But surround yourself with experienced pros and they’ll often use the term M4, which can be confusing when they mention things like the M4 bolt carrier group. To make it worse they will interchange the words AR-15 and M4! What’s…
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