The Thumper, The Grenade Launcher That Changed Everything

The M79 'Bloop Tube' was a post-WWII development intended to provide infantry with a portable, accurate grenade launcher, replacing the bazooka. Its core innovation was the 40x46mm low-pressure system, adapted from German Rheinmetall High-Low pressure technology, enabling a lightweight design. Despite its success in Vietnam, its single-shot nature led to the development of under-barrel launchers like the M203.

The Colt XM-148 was the US military's first under-barrel grenade launcher, developed from the SPIW program for the M16 rifle. Despite its innovative design, it suffered from significant flaws, including a snagging trigger bar, high cocking force, and mechanical complexity. These issues led to its replacement by the simpler and more reliable M203, making the XM-148 a notable but ultimately unsuccessful footnote in firearms history.

The M79 Thumper, a 40mm break-action grenade launcher, offered significant squad-level firepower post-WWII. Its unique swiveling trigger guard aids use with gloves, and specialized rounds like the 'Hornet's Nest' adapter (firing fifteen .22 LR rounds) demonstrate its versatility. Modified versions were used by special operations in Vietnam, and non-lethal rounds exist for riot control.

This YouTube video, titled "Lança-granadas vs Pistola Sinalizadora: Qual é mais insano?" (Grenade Launcher vs. Signal Pistol: Which is more insane?), directly compares two distinct types of projectile-launching devices. While the exact models and calibers are not specified in the provided data, the title strongly suggests a comparative analysis of their capabilities and 'insanity' factor. This implies a focus on performance, visual spectacle, or perhaps tactical applications. The content likely explores the differences in power, range, and potentially historical or modern uses of a grenade launcher versus a signal pistol.

The Modello 1928 Tromboncino was an Italian rifle-mounted grenade launcher based on the Carcano 91/28 TS rifle. It featured a unique shared bolt system between the rifle and launcher to save weight and prevent accidental firing. Though innovative, its limited grenade effectiveness led to obsolescence by 1934, replaced by the Brixia Model 35. These launchers are exceptionally rare, with few known examples in the US.

This video provides a book review of "The Lee Enfield" by Ian Skennerton. The reviewer highlights Skennerton's expertise on British rifles and praises the book for its extensive information on developmental, experimental, and standard production Lee-Enfield models from various countries. While acknowledging the book's depth, the reviewer criticizes its organization and editing, noting that it can be frustrating to navigate despite its visual appeal. The book is deemed indispensable for Lee-Enfield enthusiasts due to its unique information.

This video demonstrates the proper technique for loading the M1 Garand to prevent 'Garand Thumb'. It emphasizes maintaining downward pressure on the top round to control the bolt's cycling. The content debunks the idea that 'Garand Thumb' is inevitable, attributing it to inexperience and improper handling.

The Altyn helmet, a Russian titanium model, is tested for its ballistic capabilities. While effective against 9mm NATO and 00 buckshot, it fails to stop rifle rounds like 5.56x45mm and .308 Winchester. The visor cracks under birdshot impact. Despite its historical reputation, its extreme weight and lack of rifle protection make it outdated compared to modern composite helmets.

This ballistic test by Garand Thumb reveals that NIJ Level 3A rated ballistic masks, while stopping some projectiles, fail to adequately protect the wearer due to extreme backface deformation. Hits from a .44 Magnum caused fatal deformation, and rifle rounds completely penetrated. The conclusion is that these masks are largely ineffective and potentially dangerous, recommending helmets and proper training instead.

This video delves into the notorious 'Garand Thumb' phenomenon, explaining its mechanics and pain level through direct testing. It covers the M1 Garand's history, technical specifications, and proper loading techniques to avoid injury, including the 'bladed hand' method. The content also features novice testing and concludes with advice on training and firearm ownership.