Gardiner/Scott Prototype Grip Safety on an Early 1903 Springfield

This video details the Indonesian rebore process of 6.5 Dutch Mannlichers to .303 British, utilizing original barrels bored out and re-rifled. It highlights the compatibility of .303 cartridges with the original 6.5 Dutch en-bloc clips and explains the 'double shoulder' effect on spent brass as a harmless artifact of the conversion, serving as an identifier.

This YouTube video, titled 'Fazendo upgrade na minha AR15' (Making upgrades to my AR15), focuses on modifications and enhancements for the AR-15 platform. While the description is minimal, the title clearly indicates a gunsmithing or custom build theme revolving around this popular rifle. Viewers can expect content related to improving an AR-15, potentially showcasing new parts, installation processes, or performance improvements.

This video addresses a perceived deficiency in a Short-Barreled Rifle (SBR) and outlines the process of rectifying it. The title suggests a modification or accessory addition to improve the firearm's functionality or aesthetics. The content likely delves into gunsmithing or customization aspects related to SBRs.

This video explores the possibility of converting a Glock pistol into a precision rifle. It delves into the technical feasibility and practical implications of such a modification, likely examining how to achieve greater accuracy and range from a platform not typically associated with precision shooting. The content aims to answer the question of whether this transformation is possible and what it would entail, potentially involving custom parts or accessories.

Brandon Herrera details significant improvements to the AK-50 prototype, focusing on a new double recoil spring assembly designed to enhance reliability. While live fire testing showed progress, cycling and ejection issues persist, particularly with standard ammunition. Further adjustments to the gas system and ejection geometry are planned.

This video delves into the lesser-known aspects of the Ruger 10/22 rifle, often overlooked despite its reputation for reliability and affordability. The content creator promises to reveal factory shortcuts, magazine peculiarities, and subtle setup adjustments that significantly impact accuracy, moving beyond the rifle's commonly perceived capabilities. The aim is to showcase modifications that enhance performance and unlock the rifle's true potential.

This video details the unique 'French Finger Trap' issue with the MAS-36 rifle's bayonet, where two rifles can become unintentionally locked together. A 1951 French arsenal memorandum identified this problem, proposing a simple modification to the bayonet handle. Drilling a small hole allows a tool, like a firing pin, to depress the internal spring, enabling the separation of locked rifles.

The M134 Minigun is a scaled-down 7.62 NATO rotary cannon, requiring 24V DC power and consuming 1.5 kW. Its high rate of fire (3,000+ RPM) is essential for aircraft engagement windows. The complex delinker mechanism is critical for feeding ammunition, and practical hand-held use is impossible due to weight and recoil. Live fire demonstrates rapid ammunition consumption and the need for indirect aiming.

The H&K G11 is a revolutionary prototype assault rifle designed in the late 20th century, notable for its caseless ammunition and unique rotating drum bolt mechanism. Despite advanced features like a 2000 RPM burst fire rate and integrated optics, its development was ultimately halted by geopolitical shifts and cost concerns.

This video demonstrates the assembly and live-fire of the German 1936 pattern light mortar (L.Gr.W.36). It highlights the mortar's leveling mechanism for accuracy and the difficulty in visually tracking its 50mm projectiles after firing. The content showcases historical military hardware and its operational use.