"M110A1" redirects here. For the self-propelled howitzer, see M110 howitzer.
Designated marksman rifle chambered for 7.62x51mm
M110A1 Compact Semi-Automatic Sniper System
The M110A1 Squad Designated Marksman Rifle
Type
Sniper rifle
Service history
In service
2016–present
Production history
Designed
2016
Manufacturer
Heckler & Koch
Variants
M110A1 CSASS M110A1 SDMR
Specifications
Mass
3.81 kg (8.40 lb) unloaded M110A1 CSASS
6.80 kg (14.99 lb) loaded M110A1 CSASS, scope, suppressor[1]
4.15 kg (9.15 lb) unloaded M110A1 SDMR
6.35 kg (14.00 lb) loaded M110A1 SDMR, scope, suppressor[2]
Length
899 mm (35.39 in) (M110A1 CSASS buttstock fully collapsed)
1,009 mm (39.72 in) (M110A1 CSASS buttstock fully extended)
1,019 mm (40.12 in) (M110A1 SDMR with suppressor)[2]
Barrel length
414 mm (16.30 in)[2]
Cartridge
7.62×51mm NATO
Action
Gas-operated, rotating bolt
Rate of fire
Semi-automatic
Muzzle velocity
750 m/s (2,461 ft/s) with 175 gr. M118LR[citation needed]
Effective firing range
800 metres (875 yd) (point targets)
Feed system
10 or 20-round detachable box magazine
M110A1 may refer to the M110A1 CSASS (Compact Semi Automatic Sniper System) or the M110A1 SDMR (Squad Designated Marksman Rifle). It is an American semi-automatic sniper rifle that is chambered for the 7.62×51mm NATO round. It is manufactured by Heckler & Koch (H&K) and developed from the company's HK417, and similar to the Bundeswehr G28 configuration. Despite a designation similar to the M110 Semi-Automatic Sniper System (M110 SASS), the M110A1 is an unrelated design as the former was a development of the Knight's Armament Company SR-25. The M110A1 CSASS was expected to supplant and eventually replace the M110 in U.S. military service but this does not appear to have occurred as of 2022. However, several thousand M110A1 SDMRs have been fielded with the US Army and Air Force to replace various weapon systems currently being used.
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M110A1 may refer to the M110A1 CSASS (Compact Semi Automatic Sniper System) or the M110A1 SDMR (Squad Designated Marksman Rifle). It is an American semi-automatic...
replaced by the M110A1 SDMR, expected to enter service in the 2020s. In this role, the M110A1 retains the "Squad Designated Marksman Rifle" name. The addition...
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G28 as New Squad Marksman Rifle". Military.com/Kitup. Archived from the original on 12 March 2018. "SHOT Show 17 – H&K M110A1 CSASS". Soldier Systems Daily...
shooting a suppressed Barrett MRAD Barrett Model 98B Remington MSR Mk 13 rifleM110A1 "MRAD". Barrett. Archived from the original on 28 August 2012. Retrieved...
(Direct View Optic) for Army M4A1 carbines, and is the optic used with M110A1Rifle SU-294/PVS: Nightforce 1-8x24mm scope MAS-D S-VPS (Miniature Aiming System-Day...
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