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A429
A4 most often refers to: *A4 paper, a paper size defined by the ISO 216 standard, measuring 210 × 297 mm A4 and variants may also refer to: Science and mathematics * British NVC community A4 (''Hydrocharis morsus-ranae - Stratiotes aloides'' community), one type of Aquatic communities in the British National Vegetation Classification system * Combretastatin A-4, a stilbenoid chemical compound * ''A''4, the alternating group on four elements * A4, a type of stainless steel, as defined by ISO 3506, equivalent to SAE steel grade 316L * Subfamily A4, a rhodopsin-like receptors subfamily Medicine * ATC code A04 ''Antiemetics and antinauseants'', a subgroup of the Anatomical Therapeutic Chemical Classification System * Lipoxin A4, a lipoxin * Androstenedione, an androgen steroid hormone Transportation Aeronautics and astronautics * "A-4 Helldiver", the civil version of the Curtiss Falcon an attack aircraft manufactured by Curtiss Aircraft Company * Douglas A-4 Skyhawk, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M16A4
The M16 rifle (officially designated Rifle, Caliber 5.56 mm, M16) is a family of military rifles adapted from the ArmaLite AR-15 rifle for the United States military. The original M16 rifle was a 5.56×45mm automatic rifle with a 20-round magazine. In 1964, the M16 entered US military service and the following year was deployed for jungle warfare operations during the Vietnam War. In 1969, the M16A1 replaced the M14 rifle to become the US military's standard service rifle.Urdang, p. 801. The M16A1 incorporated numerous modifications including a bolt-assist, chrome-plated bore, protective reinforcement around the magazine release, and revised flash hider. In 1983, the US Marine Corps adopted the M16A2 rifle and the US Army adopted it in 1986. The M16A2 fires the improved 5.56×45mm (M855/SS109) cartridge and has a newer adjustable rear sight, case deflector, heavy barrel, improved handguard, pistol grip and buttstock, as well as a semi-auto and three-round burst fire sele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
