How to clean and lubricate the AR-15 Rifle ~ LSA is still the best!

This video from School of the American Rifle highlights critical manufacturing defects in AR-15 bolt carrier keys, specifically focusing on rough internal bores. Lead instructor demonstrates how a poorly finished carrier key can cause significant friction, premature wear on components like gas tubes, and operational issues, contrasting a problematic new Colt carrier with a well-functioning older model. The expert emphasizes the importance of a smooth bore for reliable function and longevity of expensive parts.

This video demonstrates John Lovell's preferred method for lubricating an AR-15, prioritizing oiling over extensive cleaning for standard maintenance. Key steps include applying Slip 2000 EWL directly to the Bolt Carrier Group (BCG) through the ejection port and magazine well, ensuring lubrication of vent holes and internal components. The process also covers lubricating the receiver and star chamber, followed by cycling the charging handle to distribute the lubricant effectively.

This expert-level guide details the disassembly of the Ruger Harrier rifle, emphasizing crucial safety precautions throughout. It covers separating the upper and lower receivers, removing the bolt carrier group and charging handle, and further disassembling the bolt carrier group into its core components. The instructions are clear and actionable, suitable for intermediate users seeking to perform routine maintenance.

This guide details the reassembly process for the Ruger Harrier Rifle, emphasizing critical safety precautions. It covers the step-by-step installation of the bolt, bolt carrier, cam pin, firing pin, charging handle, and the joining of upper and lower receivers. The instructions are delivered with expert clarity, ensuring proper function and safe operation after reassembly.

This guide, presented by School of the American Rifle, details how to identify and replace a malformed weld spring in an AR-15 Delta Ring assembly. A misaligned weld spring can cause the gas tube to be pushed off-center, leading to excessive friction or damage to the carrier key and gas tube. Replacing the faulty component ensures proper gas tube alignment and firearm reliability.

This guide details the process of diagnosing and fixing a significant rail wobble issue on a new Daniel Defense Mk18 upper receiver. The primary cause identified was a hand-tight barrel nut, compromising the stability of the RIS II rail system. The steps involve disassembly, inspection of the barrel nut, proper tightening with an armorer's wrench and torque wrench, and reassembly. This addresses a critical quality control failure that can affect firearm accuracy and reliability.

Achieving rifle accuracy involves understanding subjective standards like MOA, with practical tiers ranging from functional (3-4 MOA) to varmint grade (<1.5 MOA). Key factors include mechanical checks like scope mount tightness and barrel free-floating, proper bedding, a clean muzzle crown, and matching ammunition to the rifle's twist rate. Consistent shooting technique and awareness of environmental factors like mirage are also crucial for reliable performance.

This guide details the proper disassembly, cleaning, and maintenance of the Ruger 10-22 Walnut Sporter. It emphasizes careful stock removal to prevent damage, proper lubrication techniques, and the use of specific tools for cleaning the action, bolt, and barrel. The video highlights the rifle's reliability and offers expert tips for long-term care.

This video provides a detailed guide to disassembling, inspecting, and maintaining Smith & Wesson revolvers, presented by a factory-trained armorer with extensive experience. The instruction covers fundamental care, proper lubrication, and identifying potential issues. The demonstration uses a vintage 1976 S&W Model 25 chambered in .45 Colt, showcasing factory techniques learned from S&W's production engineer. The content is designed to be comprehensive, offering a rare look into closely guarded factory methods for enthusiasts and owners looking to keep their revolvers in optimal condition.

Proper firearm lubrication focuses on protection against corrosion and reducing friction wear with a microscopic film. Modern synthetic oils and CLPs are superior to older natural oils. Over-oiling attracts debris, creating an abrasive compound that accelerates wear, making frequent cleaning more critical than heavy lubrication. In extreme environments like cold or dusty deserts, running a firearm dry may be preferable to avoid malfunctions.