Smyth Busters: AR-15 Dents Primers - Is It Broken?

This video from Line 45, hosted by Scott, clarifies the critical differences between .223 REM and 5.56 NATO ammunition and chambers, emphasizing safety and performance implications for SHTF scenarios. Scott explains how chamber design, specifically freebore length, impacts pressure, accuracy, and barrel life, advising viewers to always check their barrel markings before selecting ammunition. The content is geared towards intermediate shooters and preppers concerned with reliable firearm function under stress.

This guide details the essential steps for lubricating a new AR-style rifle before its initial firing, as demonstrated by an experienced instructor. It covers proper disassembly, specific lubrication points on the bolt carrier group and trigger mechanism, and reassembly. The video emphasizes the importance of lubrication for new firearms, drawing a parallel to car maintenance, and highlights the performance of the We The Pieu MX1 lubricant in hot conditions like those found in Utah.

This video demonstrates a fun range day focusing on reactive target engagement with .204 Ruger and .22 Nosler calibers. Expertly handled by the speaker, the session covers shooting various targets from 25 to 100 yards, highlighting the performance of different ammunition types and rifles. The guide provides a structured approach to replicating this type of training, emphasizing safe firearm handling and understanding ballistics.

This guide explains the function of the buffer tube in an AR-15 or AR-pattern rifle, as demonstrated by Jared from GUNBROS. The buffer tube is a critical component of the operating system, housing a buffer and spring. Upon firing, the bolt carrier group compresses this spring and buffer assembly as it moves rearward, and the subsequent expansion of the spring drives the BCG forward to chamber the next round. This process is essential for the semi-automatic function of AR-pattern firearms.

John Lovell, demonstrating expert-level knowledge of the AR-15 platform, explains the function of the forward assist. This feature is designed to manually drive the bolt carrier group fully into battery when fouling, debris, or other issues prevent it from seating properly. Lovell compares its utility to backup sights, emphasizing its value as a redundancy for ensuring reliable operation, especially in adverse conditions.

This guide details the proper procedure for loading and unloading both primary (rifle) and secondary (pistol) weapon systems, emphasizing a specific order for safety and efficiency. It covers visual chamber checks, magazine insertion techniques, slide/bolt manipulation, and accessory checks, concluding with the unloading process for both firearms. The instruction highlights the importance of securing the pistol first when loading to prevent an unsecured loaded rifle.

This guide details the installation of a Geissele MK8 Super Modular Rail on an AR-15 platform. It covers securing the upper receiver, installing the barrel nut, gas system, and the rail itself, emphasizing the use of specialized tools and proper torque specifications. The process requires an intermediate skill level and careful attention to detail for a secure and functional build.

This guide, based on expert instruction from Brownells, details essential practices for proper ammunition storage. It emphasizes using airtight containers, managing humidity with desiccants, and maintaining stable temperatures to ensure ammunition reliability and safety. Proper storage is crucial for preventing corrosion and propellant degradation, especially for sensitive components like primers.

This guide details the process of upgrading an AR-15 from standard A2 furniture to Magpul components. It covers the removal of the A2 pistol grip and installation of the Magpul MIAD Grip and Magpul PRS Stock. The video demonstrates efficient assembly using specialized tools, highlighting the ergonomic benefits and adjustability of the Magpul parts. Instruction is provided by Brownells, a recognized industry authority.

This entry details the creation of a movie prop suppressor for a Remington 11-87 used in 'No Country for Old Men.' Prop master Larry Zanoff explains how the suppressor was designed to look homemade and was non-functional, with sound effects added in post-production. The process highlights the creative problem-solving involved in film armory.