AR-18 and AR-180: Can Lightning Strike Twice for Armalite?

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 in-depth look at the Armalite AR-18 and AR-180, often called the 'most successful failure.' It details the rifle's design origins, moving from forged aluminum to stamped sheet metal for cost reduction. The analysis covers external features, internal mechanics including its short-stroke gas piston system and dual recoil springs, and highlights specific military testing failures that prevented widespread adoption. Despite its shortcomings as a primary service rifle, the AR-18's operating system profoundly influenced later designs like the G36, SCAR, and SA80.

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 30-minute YouTube video from 9 Hole Reviews features a relaxed compilation of various AR-15 platform rifles and their variants, set to smooth jazz music. The video showcases a range of iconic models from Colt, Armalite, and other manufacturers, including the Colt AR15 SP-1, Armalite AR180, Colt 604 / M16A1, Colt 727 / XM4, Gordon's Carbine, Colt AR15A2 / M16A2, KAC M110 SASS, Colt LE6920/6720 AR15A3 Carbine, M4A1 Block I, Mk12 Mod0 SPR, M4A1 Block II, AR15A4 / M16A4, M4A1 URG-I "Block III", and LSA TX10. The video aims to be an enjoyable viewing experience for AR-15 enthusiasts, with mentions of supporting the creator through various platforms and affiliate links.

This video from Military Arms Channel explores the Masterpiece Arms MPAR, a rifle that is a clone of the Australian Leader T2 Mk5, which itself was a clone of the original Armalite AR-18. The description provides a detailed history of the AR-18 design and its evolution through various manufacturers and countries. It also includes links to the MAC website, Patreon, Utreon, Modern Gun School, Discord, Twitch, and discount codes for Primary Arms and Challenge Targets. The video is a deep dive into the lineage and development of this particular firearm platform.

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.