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roll pins should be just below the surface

AR-15 Maintenance: Roll Pins

AR-15s are pretty much pinned together. While a staple for many AR-15s, roll pins are not hard to work with, but a misstep could be catastrophic enough to permanently damage your AR-15. Here’s how to perform the essential construction operations associated with roll pins—the professional way.

Gas rings on an AR-15 rifle

Six Troubleshooting Solutions for AR-15 Function

When something goes wrong and the rifle won’t fire, the first question should always be, “What changed?” Before answering that, we have to determine—or at least I determine—whether we’re talking about a “fresh” rifle going through its shakedown period, or a (previously) trusted gun that’s suddenly decided to stop running. If it’s the first scenario, there’s a longer list of possibilities that include original parts, conditions, and installation quality. This article will focus on the previously-functioning rifle that’s taken a vacation from operation.

AR-15 with SOCOM Boom Tube stock

AR-15 Carbine Configuration

Don’t short-change a short gun! When you spec a carbine, think about shooting it! Simple? Yes. But don’t adapt to the carbine; make it adapt to you. Here are a few thoughts on how to get the most utility from your carbine.

Brass rifle cartridge cases

Reloading 101: The Cartridge Case

Bear with me! We’ll get started on the process of handloading next time when I talk about setting up a sizing die. But before that, it’s good to keep in mind what we’re dealing with, and that is a cartridge case, and also what happens to it during firing, which is what we’re setting out to remedy when we reuse it.

Black bolt carrier assembly on a light gray background

Bolt-Carrier Assembly: The Heart of an AR-15

The following is a specially adapted excerpt from “The Competitive AR15: Builders Guide” and “The Competitive AR15: Ultimate Technical Guide,” books by Glen Zediker and Zediker Publishing. For more information, visit or call (662) 473-6107.

The AR-15’s bolt and carrier are the heart of the rifle, so knowing the ins and outs of the bolt carrier — weight, platings and coatings, firing-pin hole size and bolt choices — can make your AR run more smoothly and reliably.