M40 rifle
The M40 rifle is a bolt-action sniper rifle used by the United States Marine Corps. It has had four variants: the M40, M40A1, M40A3, and M40A5. The M40 was introduced in 1966. The changeover to the A1 model was completed in the 1970s, the A3 in... Wikipedia
Action: Bolt action
Cartridge: 7.62×51mm NATO
Designed: 1966
In service: 1966–present
Length: M40A1: 1,117 mm (43.97 in); M40A3: 1,124 mm (44.25 in)
Mass: M40A1: 6.57 kg (14.48 lb); M40A3: 7.5 kg (16.5 lb)
Muzzle velocity: 777 m/s (2,550 ft/s) (w/175 gr. M118LR)