Smyth Busters: Is WD-40 a Good Lubricant for Guns?

This guide, presented by Brownells' Smyth Busters, addresses the common myth about mixing gun oils. Experts Stephen and Caleb explain that while intentional mixing can sometimes be used for specific cleaning tasks (like thinning cosmoline), it's generally not recommended for regular firearm operation. Different oil bases can react, leading to gumming and malfunctions. The key takeaway is to thoroughly clean a firearm before applying a new type of gun oil to avoid potential issues.

Instruction from D'Boss Firearms, presented by Dustin, clarifies that WD-40 is not a suitable long-term lubricant for firearms. While it offers protection, its solvent properties can lead to a gummy residue after evaporation, potentially hindering mechanical function. For storage, dedicated products like Cosmoline are recommended. The video emphasizes using lubricants specifically designed for firearms to ensure reliable operation.

This guide, presented by a professional gunsmith from D'Boss Firearms, focuses on proper firearm lubrication. It strongly advises against using general-purpose lubricants like WD-40, recommending instead specialized products from brands such as Breakthrough Clean Technologies and Hoppe's. The advice emphasizes using appropriate lubricants for firearm longevity and performance.

This guide details the proper lubrication of a Mosin Nagant bolt assembly and trigger mechanism. It emphasizes using light oil on most moving parts and a dab of grease on the camming area to improve bolt operation. The video also touches on lubricating the magazine spring and follower, noting it's not critical for function.

This guide details the electrochemical process for stripping nickel or chrome plating from firearm components, specifically demonstrated on a Winchester Model 67 bolt. Larry Potterfield, founder of MidwayUSA, emphasizes thorough degreasing and the use of a sulfuric acid bath powered by a 12V DC source. Proper safety protocols and immediate post-stripping lubrication to prevent rust are critical.

This guide, presented by professional gunsmith Mark Novak, details a method for cleaning and removing light surface rust from a Browning Double Auto shotgun using WD-40 and 0000 steel wool. It covers the cleaning process for both the barrel and aluminum receiver, followed by a demonstration of the unique side-loading manual of arms and test firing. Novak emphasizes that this method is suitable only for light rust and not for pitted surfaces.

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.