Designated marksman rifle

DMRs need to function as part of squad (and possibly at close quarters) and often share some basic characteristics with sniper rifles when compared to other weapons carried in the DM's platoon.

They typically have telescopic sights for more detailed observation and aiming, often also quick-deployed bipod for optimized accuracy, reduced recoil and better stability, and an adjustable stock for better ergonomics.

The ammunitions used are often of the same caliber as that of the machine guns within the same combat unit, typically a fully powered cartridge such as the 7.62 mm NATO.

For example, the Squad Designated Marksman Rifle issued to U.S. Army marksmen is frequently fitted with a Trijicon 4× ACOG, while the standard-issue M4 carbine is often equipped with an unmagnified Aimpoint CompM2 or CompM4.

DM rifles may be issued with standard ball ammunition, or special match grade loads, such as 7.62 mm NATO 'M118LR' sniper round.

In the U.S. military, designated marksman rifles chambered for 5.56 mm NATO have available the 5 g (77 grain) match grade Mk 262 Mod 0/1[note 1] cartridge that enhances the effective range to roughly 600–800 m (2,000–2,600 ft).