M110 sniper rifle

M110 sniper rifle
Name	M110
Type	Sniper rifle / Designated marksman rifle
Origin	United States
Service	2008–present
Used by	See Users section
Designer	Knight's Armament Company
Manufacturer	Knight's Armament Company; NSWC Crane modifications
Length	44.25 in (varies by barrel)
Cartridge	7.62×51mm NATO
Action	Gas piston, rotating bolt
Feed	20-round detachable box magazine
Sights	Telescopic sight; backup iron sights

M110 sniper rifle. The M110 is a United States military 7.62×51mm NATO semi-automatic sniper and designated marksman platform adopted to provide precision fire at extended ranges. Developed and fielded during operations in the 2000s, it replaced or supplemented several legacy systems to meet requirements defined by U.S. Army and U.S. Marine Corps procurement and force modernization efforts. Its role intersects with doctrine shaped by experiences in Operation Enduring Freedom, Operation Iraqi Freedom, and evolving requirements from organizations such as the U.S. Department of Defense and United States Special Operations Command.

Design and Development

Development traces to a U.S. Army solicitation seeking a semi-automatic precision rifle to augment bolt-action systems like the M24 (sniper rifle) and to provide an alternative to the squad automatic and designated marksman solutions including the M14 rifle and MK 12 Special Purpose Rifle. Knight's Armament Company responded by adapting gas-operated, short-stroke piston technology derived from earlier designs used by United States Navy SEALs, Delta Force, and other United States Special Operations Command elements. The resulting platform incorporated a free-floating match-grade barrel, a precision receiver, and a modular rail system influenced by accessory standards from Picatinny Arsenal specifications and collaboration with facilities such as Naval Surface Warfare Center Crane Division. Formal testing and evaluation involved units from the U.S. Army Marksmanship Unit, U.S. Army Special Forces Command (Airborne), and procurement offices within the U.S. Army Combat Capabilities Development Command before initial contracts were awarded in the late 2000s.

Specifications

The M110 uses the 7.62×51mm NATO cartridge standardized by NATO member states including United Kingdom, Germany, and France. Its action is a gas piston with rotating bolt, providing reliable cycling in environments encountered during Afghanistan conflict (2001–2021), Iraq War, and other deployments where forces such as the U.S. Marine Corps and U.S. Army Rangers operated. Barrel lengths and weights varied with field configurations to meet requirements similar to those that guided the adoption of systems like the HK417 and FN SCAR-H. Optics commonly employed include variable-power scopes from manufacturers whose products are used by units including Army National Guard sharpshooters, with backup sights patterned after those used by U.S. Navy platforms. Feeding is by a 20-round detachable box magazine compatible with 7.62×51mm ammunition stocks maintained by logistics elements such as the Defense Logistics Agency.

Variants

Fielded variants and manufacturer-offered models evolved to address feedback from units like 1st Special Forces Operational Detachment-Delta and 75th Ranger Regiment. Notable variants include weight-optimized short-barrel configurations for airborne and mechanized infantry similar to trends seen in M110A1 (should not be linked) replacements and longer-barrel precision models for sniper teams operating alongside systems such as the Barrett M82 and Accuracy International AWM. Enhanced versions incorporated adjustable stocks, suppressor-ready muzzles, and updated rail systems inspired by accessories used with the M4 carbine and M16 rifle families. Certain iterations received corrosion-resistant coatings and ambidextrous controls reflecting lessons from multinational deployments alongside partners like NATO forces.

Operational History

The M110 entered service during sustained combat operations where units from the U.S. Army, U.S. Marine Corps, and U.S. Air Force required semi-automatic precision engagement capability. It was employed in urban and mountainous terrain during phases of Operation Enduring Freedom and Operation Iraqi Freedom, supporting convoy security, counterinsurgency patrols, and overwatch missions alongside intelligence units such as Defense Intelligence Agency detachments. After-action reports influenced doctrine published by institutions including the U.S. Army Training and Doctrine Command and the Marine Corps Warfighting Laboratory, prompting updates to marksmanship curricula at schools like the U.S. Army Sniper School and the United States Marine Corps Scout Sniper School.

Users

Primary users included elements of the United States Army, United States Marine Corps, and select United States Special Operations Command units. International adoption or interest was noted among allied forces collaborating on operations with the United States and within frameworks involving NATO interoperability standards. Law enforcement and federal agencies with tactical units analogous to Federal Bureau of Investigation SWAT elements evaluated the platform for precision roles. Training and sustainment involved depots and centers such as Anniston Army Depot and procurement through channels managed by the Defense Logistics Agency.

Accessories and Ammunition

Common accessories mirrored those used across modern U.S. precision systems: day optics from manufacturers favored by U.S. Special Operations Command and regular forces, thermal and night-vision systems issued by U.S. Army Night Vision Laboratory and companies supplying NATO forces, suppressors meeting Australian and European export controls when used by coalition partners, and bipods and mounts compatible with Picatinny Arsenal rail interfaces. Ammunition types ranged from match-grade 7.62×51mm NATO ball and tracer used by units such as Combat Aviation Brigade elements for training, to specialized long-range match projectiles employed by sniper teams attached to units like the 101st Airborne Division (Air Assault) and 82nd Airborne Division.

Comparisons and Performance

In comparisons with contemporary semi-automatic systems such as the HK417, FN SCAR-H, and legacy M14 variants, the M110 was assessed for accuracy, reliability, and logistical commonality with 7.62×51mm NATO supplies. Performance assessments considered metrics used by testing centers including hit probability at varied ranges, mean rounds between failures under climatic conditions reported in Operation Enduring Freedom, and integration with fire-control solutions similar to those adopted by units operating sniper detection systems and reconnaissance assets. Evaluators from organizations like the U.S. Army Test and Evaluation Command used such data to inform modernization decisions and subsequent procurements.

Category:7.62×51mm NATO battle rifles