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A designated marksman rifle (DMR) is the weapon used by soldiers in the designated marksman (DM) role. The DM's role fills the gap between a regular infantryman and a sniper (typically being deployed at ranges of ) and DMRs have been developed with this middle ground in mind. These rifles have to be effective, in terms of accuracy and terminal ballistics, at ranges exceeding those of ordinary assault rifles and battle rifles (typically or less, and up to , respectively) but do not require the extended range of a dedicated sniper rifle (typically employed for targets at ranges from ). DMRs, however, often share some basic characteristics with sniper rifles in difference to the weapons carried by others in the DMs unit. DMRs may have an attached telescopic sight, quickly deployed stabilizing bipod to allow optimized accuracy and low-recoil in temporarily fixed situations or an adjustable stock. They will, though, generally retain semi-automatic firing capability (more rapid than bolt-action sniper rifles) and a larger magazine capacity of 10, 20, or 30 rounds depending on the firearm in question. ==Comparison to sniper rifles, battle rifles, and assault rifles== Most designated marksman rifles are based on an assault rifle that is currently issued by a nation's military, or on a battle rifle that was formerly issued. A battle rifle is a semi-automatic or full-automatic rifle that fires 7.62mm NATO or similar full-power rounds. Classic examples include the M14, FN FAL, AR-10 and Heckler & Koch G3. These rifles were largely replaced by assault rifles firing the 5.56mm NATO cartridge during the 1980's and 1990's. Some nations have also built rifles that were designed for the designated marksman from the ground up. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Designated marksman rifle」の詳細全文を読む スポンサード リンク
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