SA80 History: The Pre-Production XL85 and XL86

This video details the history and development of the British SA80 carbine variants, focusing on the 1989 prototype, a 1994 experimental version, and the adopted L22A2. It highlights design choices driven by parts availability and the evolution of the carbine's features, including barrel length, gas systems, and handguards, culminating in the Heckler & Koch redesigned L22A2.

The L85A1, Britain's SA80 service rifle, is critically reviewed for its early reliability issues, awkward ergonomics, and fragile furniture. Despite a bullpup design offering a full barrel in a compact package, its non-intuitive controls and poor quality control led to significant problems. While later A2 versions were improved by Heckler & Koch, the A1 remains a flawed but iconic piece of military hardware.

This video provides an expert overview of Murdoch & Co's remanufactured SA80 family of rifles, including the L85A1, L85A2, and L85A3 models. Evan, CEO of Murdoch & Co, details the company's mission to preserve the history of the SA80 by producing semi-automatic versions in the USA. The L85A3 is highlighted for its modern upgrades like an M-LOK handguard and free-float barrel, while the Collector Series focuses on historical accuracy. The trigger performance is noted as superior to other bullpup designs.

The Aly & Kaufman AKB-23 is a bullpup conversion kit for the Brownells BRN-180, designed to emulate the British L85/SA80. It features a milled aluminum lower with an AR-15 fire control group, connected via a trigger transfer bar. The 3D-printed furniture mimics the L85's ergonomics, and range testing confirms it captures the rifle's feel and accepts SA80 magazines.

Jonathan Ferguson of the Royal Armouries explains that the L85A1's fundamental design flaws, such as the ejection port size, could not have been fixed by Enfield even if the company hadn't been sold. While improved quality control might have reduced malfunctions, the inherent issues would have persisted, making the SA80 platform problematic regardless of manufacturing.

This video details the extensive upgrades from the L85A1 to the L85A2 by Heckler & Koch, addressing critical reliability issues. It highlights specific component changes like the trigger, charging handle, bolt, and receiver modifications. The L85A3 is presented as an upper receiver upgrade focused on improved welding and optics mounting.

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.