Springfield Armory M21 tactical rifle (USA)
Caliber: .308 Win(7.62mm NATO)Barrel: 22in(559mm) Firing Mechanism: Rotating bolt, gas operated, air cooled, semi-automatic
magazine fed rifle. Capacity: 10 round box magazine, Weight(without scope): 12lbs(5.27kg)Length: 44in(1118mm)
US Army M21 sniper rifle *
During the Vietnam War, US Army felt the demand
for an accurate sniper rifle. The army accordingly selected then standard
M14 Semi-automatic rifle for its ability to provide a quick second shot.
The Army marksmanship Unit was charged with tuning M14 into effective sniper
rifle. This has been done with adding a modern telescopic sight, named
ART (Adjustable Ranging Telescopic) and by selecting rifles with the best
accuracy.