Gunsmithing

AR-15 not feeding, firing, or ejecting right? This no-fluff AR-15 Troubleshooting Guide breaks down every failure—light primer strikes, short-stroking, double feeds, weak ejection—and shows exactly how to fix it. Built for DIY gunsmiths, competitive shooters, and anyone who wants their rifle to run reliably.

This restored post lists every tool used in my original PF940SC completion videos, from vices to files and Dremel accessories. Building methods have changed—this is here for reference only.

This archived guide shows how I originally completed a Polymer80 PF940SC using a Dremel. While outdated, it's still useful for reference and troubleshooting older builds.

This is the original PF940SC drill press method from the early days of Polymer80. It’s outdated now, but restored for reference and old-school builders.

Learn how to fully disassemble and reassemble your Glock 43 with this no-fluff, step-by-step guide by Jason Schaller. From striker to trigger, this teardown walkthrough covers every spring, pin, and inspection point — built for DIYers who demand confidence, safety, and performance.

The ultimate Glock troubleshooting guide—fix feeding, ejection, trigger, and firing issues fast. Real-world tips, clean fixes, no B.S.

Thinking about working on your 1911 and not sure what tools you’ll need? This guide breaks down the tools I used (or close replacements) during my complete Series 70 1911 disassembly and reassembly process. You’ll find links to the exact or comparable tools I trust—plus links to the video that shows each step in action. […]

Trouble with your 1911? Learn how to diagnose and fix common issues fast—feeding, ejection, accuracy, and reliability problems.

The Importance of Taking Breaks in Gunsmithing Let’s face it—when you’re deep into a gunsmithing project, it’s easy to get lost in the work. Whether you’re modifying a firearm, troubleshooting a malfunction, or simply cleaning and maintaining your gear, time can fly by. However, pushing through fatigue, frustration, or even minor setbacks can lead to […]

In this video, I’m going to be doing a 1-year review of the Real Avid Master Vise. I’ve been using this vise for the past year for a variety of tasks, including gunsmithing, cleaning, and maintenance. I’m really impressed with this product and will be talking about my overall experience with the vise after using […]

Join us on Extreme DIY Gunsmithing as we create the ultimate .308 Winchester custom rifle, named the Smooth Operator. This precision rifle is built around the renowned Pristine short action, known for its unparalleled smoothness and accuracy. Crafted for both tactical and practical performance, this build features top-tier components from industry-leading brands, making it perfect […]

Learn how to field strip and clean your Mossberg 500 shotgun in this comprehensive Mossberg 500 Field Strip & Clean DIY guide. In this video, we’ll take you through each step of the process, from disassembly to cleaning and reassembly, ensuring your shotgun remains in top condition. Whether you’re a seasoned gunsmith or a beginner, […]