Videos tagged with AR-15 Gunsmithing

This video provides a product spotlight on the Mk3 Device Lite, an AR-15 receiver fixture from The Device Mfg., presented by Brownells Gun Tech Caleb Savant. The Device Lite is a two-piece tool designed to securely hold an AR-15 upper receiver in a bench vise, facilitating various gunsmithing tasks. It supports the receiver internally, mimicking the bolt-carrier group and charging handle, which is particularly beneficial for barrel nut installations, forward assist and ejection port cover mounting, and optic installation. A bonus feature includes a slot for setting up M-LOK accessories. The fixture is constructed from 6061 T6 aluminum to prevent damage to the receiver's harder 7075 alloy.

This video provides a detailed, multi-chapter guide to installing, gauging, fitting, and tuning three different AR-15 fire control groups (FCGs): the Geissele SSA-E, LaRue MBT, and a factory type. It covers essential steps like spring inspection, pin removal and inspection, de-magnetizing, de-greasing, and precise gauging of FCG components and lower receiver bores. The video also touches upon receiver bore lapping, selector bore gauging, and pistol grip installation issues. While focusing on FCGs, it explicitly states it does not cover anti-rotation pins, lightened hammer springs, or cassette triggers. The content is highly technical and geared towards AR-15 builders and enthusiasts seeking to understand and optimize their trigger systems.

This video demonstrates a critical function test for the AR-15 platform, focusing on safety and operational checks. Key steps include verifying the safety selector's functionality, ensuring the hammer releases correctly in 'Fire' mode, and confirming the disconnector resets the hammer properly. Performing these checks ensures the rifle is safe and reliable before use.