SmythBusters: Top 5 AR Building Myths

This video demonstrates the installation and use of the Brownells AR-15 Upper Receiver Vise Block. The block is designed to securely hold an AR-15 upper receiver in a vise for various gunsmithing tasks, such as installing muzzle devices or barrel nuts. It features a unique internal wing for added rigidity and support, reducing stress on the receiver's lugs.

This video provides a detailed, step-by-step guide to building an AR-15 chambered in the .338 ARC caliber. The build features components like a Faxon barrel, Midwest Industries handguard, Dead Air suppressor, and a Rifle Speed adjustable gas block. The instructor emphasizes proper torque specifications and installation techniques for critical components, offering insights into the .338 ARC cartridge's advantages for hunting and its subsonic capabilities.

This guide details the process of lapping an AR-15 receiver to ensure proper barrel alignment for improved long-range accuracy. Instructor Stephen Caleb from Brownells explains that receiver faces can be slightly out of alignment, leading to barrel runout. The process involves using a specialized lapping fixture and aluminum oxide lapping compound with a drill to create a perfectly flat receiver face. This ensures the barrel seats flush and square, critical for precision shooting beyond 500 yards.

This guide details the benefits and application of an action rod for AR-15 upper receiver work, specifically during barrel and handguard installation. The action rod provides enhanced stability and support by engaging the barrel extension lugs and pinning into a vice, which is crucial when torquing the barrel nut. It also offers an advantage over traditional vice blocks by preventing interference with modern handguard designs.

This video provides a detailed, step-by-step guide on how to install the Law Tactical Gen-S Sidefolder adapter onto an AR-15 platform. The instructor, Caleb from Brownells, walks viewers through the removal of the older Gen 3M model and the installation of the updated Gen-S, highlighting key differences, material upgrades, and the use of specialized tools like the Law Tactical Lower Alignment Tool and Guesley Reaction Block for precise assembly. The guide emphasizes proper staking of the castle nut and offers tips for a secure and reliable installation.

This guide details the installation and accessory setup for the Brownells Exclusive Mk18 Mod 1 upper receiver. It covers selecting between quad rail and M-LOK handguards, mounting optics and accessories like the EOTECH EXPS2, G33 magnifier, and Surefire RC3 suppressor. The guide also touches on compatibility with grenade launchers and the benefits of an A5 length buffer system for improved shooting dynamics, as demonstrated by an experienced instructor.

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.