https://greyhive.com/videos/watch/844aff08-698a-425b-859a-44e5d578de3f Today we’re dissecting the heart and soul of your AR-15, the barrel. If you’ve ever had feeding issues, extraction problems, or just wanted to know exactly what each part of your rifle barrel actually does, this is the video for you. You’ll learn why the barrel extension is threaded on (not monolithic), how headspace is set, why M4 feed ramps matter for reliability, what the throat does (and why it wears out first), the difference between .223 and 5.56 chambers, how the gas port and gas block journal affect cycling, and why a damaged barrel crown can destroy accuracy. Timestamps: 0:00 Introduction to the Barrel 1:53 The Barrel Extension 5:15 The Chamber and Bore 9:30 The Part Where Gas Moves 11:51 The End of Your Barrel Follow AT3 Tactical Projects: https://social.at3tactical.com/ Follow us on Social Media: Instagram: @at3tactical Twitter/X: @AT3Tactical Facebook: facebook.com/AT3Tactical 🤝 Transparency We strive to provide the growing AR-15 shooting community with helpful, fact-driven information about the AR-15 & AR-15 style firearms and accessories to do our part in bolstering a more well-informed community and safer when handling, building, or shooting their personal firearm. Let's face it, we all have to start somewhere when it comes to becoming a firearms expert. Our goal is to help you get there one small step at a time. The purpose and content of this video is to provide general information regarding the products and their applications on any/all related firearms that strictly comply with all federal, Minnesota state, and local laws. The viewer expressly agrees that AT3 Tactical LLC; its officers, directors, employees, and agents shall not be liable for any damages or losses related to the products and information provided in this video and hereby agrees to hold the foregoing harmless from any such losses or damages. AT3 Tactical LLC is a Federal Firearms Licensee. AT3 Tactical | Build The Ultimate AR Wed, 17 Jun 2026 09:29:50 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://greyhive.com https://greyhive.com/lazy-static/avatars/5746210d-885d-44b2-9be0-92bf1e4d34df.webp https://greyhive.com/videos/watch/844aff08-698a-425b-859a-44e5d578de3f All rights reserved, unless otherwise specified in the terms specified at https://greyhive.com/about and potential licenses granted by each content's rightholder.