美国陆军的精确射击步枪的正式名称是“班级指定神枪手步枪”（United States Army Squad Designated Marksman Rifle），简称SDM-R，而海军陆战队的相同武器的正式名称为“班用高级神枪手步枪”（U.S. Marine Corps Squad Advanced Marksman Rifle），简称SAM-R。 首先来理解一下什么叫“SDM-R”。

The M110A1 SDMR during testing in 2019. The SAM-R has since been replaced in U.S. Army service, mostly due to the performance of match grade 5.56 NATO ammo in the DMR role. [1] Its slated replacement was the Heckler & Koch HK417-based M110A1 SDMR, [6] expected to enter service in the early 2020s. [7]

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2023年6月4日 · This is an analysis of the Old and New MR762/MR308, the G28 and the M110A1 CSASS/SDMR. It analyzes technical specifications, accuracy, precision and ballistics from the perspective of a precision marksman or military/police sniper.

Much like the U.S. Marine Corps SAM-R, the 3rd Infantry division SDM-R was an accurized M16 rifle built in-house by the United States Army Marksmanship Unit with 240 rifles provided for deployment in Iraq. [1] . The rifle was informally known as "the AMU rifle".

SDMR是由“紧凑型半自动狙击系统（CSASS）”发展而来，最初是为了取代2008年开始装备的M110半自动狙击系统（SASS）。 这是五年前黑克勒-科赫中标时M110A1 CSASS，配备是施密特-本德（Schmidt & Bender）PMII Ultra Short 3-20×50瞄准镜。 M110A1（左）与M110（右）。 M110由骑士装备公司（Knight's Armament Company）在SR-25的基础上发展而来，口径7.62×51mm。 但是由于该公司在大批量生产品控方面出现问题，造成该枪性能波动非常大， …

2023年6月18日 · The army SDM-R is a 20" Douglas SS fluted barrel with FSB flats milled on the barrel for set screws, m16a4 lowers and a Daniel Defense M4 rifle rail which has been long discontinued which will be the hardest thing to find. This is my SDM-R clone or inspired build. https://imgur.com/a/YK5JJ3z.

2019年2月9日 · For the A2 Gurus out there, was there any type of A2 sniper/DMR that was ever developed for this role in the military? Colt Model 655 and 656: Never standardized. Predecessor to other M16-based designated marksman rifles. SAM-R: Used by the United States Marine Corps. Replaced by the Mk 12 Special Purpose Rifle.

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2008年3月5日 · The SDMR is a highly modified M16A2 rifle assembled by the experts at the AMU and is fitted with a 1-inch diameter AMU-fluted match grade barrel with 1/8 inch twist for use with the 77-grain MK262 match-grade ammunition, free-floating Daniel Defense 4-quad rail system, Trijicon ACOG 4×32 reflex sight with A.R.M.S. QD mount, Harris bipod and ...