Videos tagged with Borescope

This expert review by Preston Moore details a comprehensive inspection and ballistic testing of the LMT 12.5" DI barrel in 5.56 NATO. The analysis includes borescope examination of the bore, chamber, and rifling, alongside detailed group testing with various ammunition types. The instructor highlights performance metrics like muzzle velocity and A-ZED scores, offering valuable insights for firearm enthusiasts and builders considering this barrel.

This guide details the comprehensive inspection and testing process for an AR-15 barrel, as demonstrated by Preston Moore. It covers essential bench inspections using specialized gauges and micrometers, followed by detailed borescope analysis of the bore and chamber. The guide emphasizes a rigorous 30-shot group testing methodology to evaluate accuracy under simulated match conditions, utilizing proprietary metrics like the A-ZED score for objective benchmarking. This approach provides high-confidence data for discerning barrel performance.

This video from Shot Show 2025 features G from Paramount Tactical interviewing Tony Marohn of Microtech about their updated Ultratech OTF knife, highlighting its new Gen 3 dual fuel mechanism with zero blade play technology. The discussion also covers the extensive engineering and testing behind the knife. The second half of the video showcases Teslong's new NTG 500 borescope with a focus and fold system and their TTRS line of thermal rifle scopes, emphasizing their utility for firearm maintenance and hunting.

This guide details a method for installing low-profile AR-15 gas blocks using a thumb screw for initial alignment and a borescope for precise gas port alignment. It emphasizes the importance of set screws with teeth for better grip and provides torque recommendations for thread lockers like Rocksett and high-temperature red Loctite.

This expert guide details the meticulous inspection process for PSA AR-15 upper receivers, led by Chad Albrecht of School of the American Rifle. It covers critical measurements like muzzle device torque, barrel concentricity, gas port size, and BCG dimensions, utilizing specialized tools to assess build quality and potential issues like over-gassing. The assessment provides a B- grade for PSA uppers, deeming them decent for their price point despite noted deviations from Mil-Spec standards.

This video showcases the Teslong NTG200H Focus and Fold Rifle Borescope, highlighting its improved focus ring and integrated 4.5-inch IPS screen. The instructor demonstrates its use for inspecting rifle barrels, including identifying debris and wear, and compares it to older, less convenient models. The borescope is presented as a versatile and approachable tool for gunsmithing and firearm maintenance.

This YouTube video explores the unintended uses of a borescope, a tool typically employed for inspecting firearm barrels. The description hints at creative or alternative applications for this specialized equipment, suggesting a departure from its conventional purpose. The content likely showcases a practical or inventive scenario where the borescope proves useful beyond its original design, emphasizing adaptability and resourcefulness in tool usage.

This product spotlight introduces the Teslong Digital Borescope, a tool designed for inspecting firearm bores. It highlights the borescope's features, including interchangeable heads for various calibers, measurement markings on the rod for depth indication, and the ability to record video and take pictures. The demonstration shows its use in inspecting a new chrome-lined barrel, revealing shipping grease and the rifling, and also points out its utility for aligning gas blocks.

This guide details a comprehensive barrel autopsy procedure for an AR-15, as demonstrated by Chad Albrecht from School of the American Rifle. It covers essential checks including thread runout, material verification, erosion gauging, straightness, gas port alignment, and headspace. The critical step involves using a borescope to identify manufacturing defects, such as the smoothbore condition found in the featured Ballistic Advantage barrel, emphasizing the importance of thorough inspection regardless of brand reputation.

This guide details the proper alignment of an AR-15 gas block, emphasizing that perfect centering is often unnecessary due to oversized gas block holes. It covers the debate on gas block gap, demonstrates alignment using a digital borescope, and provides recommendations for modern builds using clamp-on or set-screw blocks. The information is presented with professional authority by Caleb from Brownells.

This video debunks the myth that new firearm barrels do not require cleaning. Brownells Gun Techs Steve and Caleb use a borescope to demonstrate that factory-new barrels, particularly AR-15s, often contain grease in the bore and chamber. This grease can cause extraction failures, pressure issues leading to malfunctions, and in extreme cases, a catastrophic weapon failure or 'KA-BOOM.' The experts advise a simple cleaning with solvent to remove this protective shipping grease before firing the first round, regardless of whether the barrel is a replacement or part of a new firearm.

This video features Alan from Teslong showcasing their new collapsible and WiFi-enabled borescopes at SHOT Show 2023. The discussion covers the upcoming release in Q2 2023 and compares the features and pricing of both wired and wireless models. The video aims to highlight Teslong's latest innovations in inspection camera technology for potential use in firearm maintenance or diagnostics.