Semiauto Portuguese AR-10 on a Sendra Receiver

The Armalite AR-16 represents a crucial, yet often overlooked, step in rifle development, bridging the gap between the AR-10 and the AR-18. It pioneered the use of stamped sheet metal receivers and a short-stroke gas piston system to reduce manufacturing costs. Though never mass-produced, its design innovations significantly influenced subsequent combat rifle designs like the L85, Steyr AUG, and G36.

The Armalite AR-16 is a rare prototype chambered in 7.62 NATO, bridging the gap between the AR-10 and AR-18. It features a short-stroke gas piston, dual recoil springs, and a unique 5-aperture rotating rear sight. Only two AR-16s are known to exist, making it a significant piece of Armalite's design history.

This video provides an expert-level comparison between the Ruger SFAR and the Palmetto State Armory Sabre-10, two competitively priced AR-10 platform rifles. The host, demonstrating high authority, details the technical specifications, range performance, and design philosophies of each. The Ruger SFAR is highlighted for its lightweight, AR-15-sized design and excellent accuracy, while the PSA Sabre-10 is praised for its conventional robustness, modularity, and premium factory upgrades. The review offers practical insights for choosing between these two capable .308 Winchester rifles.

This YouTube video provides a detailed look at the original Dutch-manufactured ArmaLite AR-10. It delves into the history of this firearm, which served as the predecessor to the AR-15, focusing on its practical aspects. The content covers the AR-10's specifications, controls, ergonomics, and highlights what made it a unique and special weapon. The video also features an ASMR segment focusing on the firearm and mentions a future disassembly video. It is produced by the "Arm and Gun" channel, which also promotes merchandise and a secondary channel.

This review details AR-15 serial number 6, a rare original configuration prototype from the Springfield Armory National Historic Site. It explores the AR-15's lineage from Project Salvo and its development from the AR-10, highlighting key design features like the original 25-round straight magazine and top-mounted charging handle. The video contrasts early prototype elements with later modifications made after military trials, such as the rear charging handle and 20-round magazine.

This review focuses on the HK MR308, the civilian variant of the HK 417, chambered in .308 Winchester. Key features highlighted include its fully ambidextrous controls, available 10 and 20-round magazines, and a durable chrome-lined barrel. The rifle sports the signature HK RAL 8000 finish and is demonstrated in a live-fire segment.

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.