John Browning
John Moses Browning (January 23, 18551(https://en.wikipedia.org/wiki/John_Browning#cite_note-Jguqo-1) — November 26, 1926) was an American firearm designer who developed many varieties of military and civilian firearms, cartridges, and gun mechanisms — many of which are still in use around the world.2(https://en.wikipedia.org/wiki/John_Browning#cite_note-ZSzWx-2) He made his first firearm at age 13 in his father’s gun shop and was awarded the first of his 128 firearm patents on October 7, 1879, at the age of 24.3(https://en.wikipedia.org/wiki/John_Browning#cite_note-qSJIy-3) He is regarded as one of the most successful firearms designers of the 19th and 20th centuries and pioneered the development of modern repeating, semi-automatic, and automatic firearms.
Browning influenced nearly all categories of firearms design, especially the autoloading of ammunition. He invented, or made significant improvements to, single-shot, lever-action, and pump-action rifles and shotguns. He developed the first reliable and compact autoloading pistols by inventing the telescoping bolt, then integrating the bolt and barrel shroud into what is known as the pistol slide. Browning’s telescoping bolt design is now found on nearly every modern semi-automatic pistol, as well as several modern fully automatic weapons.