Brownells - Jack Rowe, Master Gunsmith Series, Bore Size and Proofing, Part 3 of 6

This video delves into the intricacies of firearms manufacturing, covering topics from the evolution of machining techniques like CNC and the Blanchard lathe to the critical role of metallurgy and tolerances in firearm design. It explores how manufacturing processes have adapted over time, the challenges of wartime production, and the future of technologies like 3D printing in the industry. The discussion highlights that while modern manufacturing is more adaptable, fundamental principles of material science, precision engineering, and cost-effectiveness remain paramount.

This video showcases the construction and firing of a custom-built 'billiard ball cannon' by Booligan. The cannon features a 2.25-inch bore designed to fire standard billiard balls using approximately 2 ounces of black powder, achieving a muzzle velocity of around 1200 fps. The creator demonstrates technical knowledge of bore sizing and propellant measurements, highlighting the process of building and preparing to test such a unique firearm.

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.