Bump Stop for Trunnion-Mounted Weapon.
DEPARTMENT OF THE ARMY WASHINGTON DC
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A bump stop for a trunnion-mounted weapon that includes a torsion bar shock absorber carried by the receiver portion of the weapon for absorbing shock loads as the weapon nears the limits of its upward and downward motion. The bump stop is advantageously characterized by compactness, high energy-absorbing capacity, durability, insensitivity to temperature or other environmental variations, and usability in two directions, up and down. Author