ball locking mechanism
41AR-15 — The AR 15 comes in many sizes and has many options, depending on the manufacturer. The part shown bottom center is the lower receiver, which under US law is the component legally considered the firearm . Type …
42Copy protection — Copy protection, also known as content protection, copy obstruction, copy prevention and copy restriction, refer to techniques used for preventing the reproduction of software, films, music, and other media, usually for copyright reasons.[1]… …
43Machine gun — [ thumb|200px|An illustration of later model 19th century Gatling gun. It was a multi barreled rotary machine gun fired via a manual crank, which mechanically loaded and primed cartridges from the hopper above the gun] : For other uses of the… …
44M1 Garand rifle — Infobox Weapon name=Rifle, Caliber .30, M1 caption= origin=flag|United States type=Semi automatic rifle is ranged=yes service=1936–1963 used by=See Users wars=World War II, Korean War, Vietnam War (limited) designer=John C. Garand design… …
45Lee-Enfield — This article is about the early twentieth century British rifle. For other uses, see Enfield rifle (disambiguation). Lee Enfield Short Magazine Lee Enfield No. 1 Mk. III Type …
46Kammerlader — Infobox Weapon|is ranged=yes name=Kammerlader caption=The breech end of two Kammerlader rifles origin=Norway type=Breech loading rifle designer=Unknown design date=1842 service=1842 ndash; 1870 cartridge=Minié ball in paper cartridge action=See… …
47Playing rugby league — Rugby league players all need to be particularly physically fit and tough because of the game s fast pace and the expansive size of the playing field as well as the inherently rough physical contact involved. Depending on his exact role or… …
48Rugby league gameplay — Cameron Smith throws a pass during a rugby league match Like most forms of modern football, rugby league football is played outdoors on a rectangular grass field with goals at each end that are to be attacked and defended by two opposing teams.… …
49Harp — A medieval harp (left) and a single action pedal harp (right) String instrument Hornbostel–Sachs classification 322 5 (Composite chordophone sounded by the bare fingers) …
50Wheellock — Wheellock, wheel lock or wheel lock, is a mechanism for firing a firearm. It was the next major development in firearms technology after the matchlock and the first self igniting firearm. The mechanism is so called because it uses a rotating… …
