USGI M203 Grenade Launcher Handguard 40mm Inc M203 Sight
USGI M203 Grenade Launcher Handguard 40mm Inc M203 Sight is constructed of black composition nylon with inner aluminum heat shield for 40mm M203 grenade launcher. The handguard measures 12 inches long and 2.155 inches at its widest point. The internal is formed to conform to the contour of the barrel of an M16 rifle and the external is formed to a special shape. Also available in 7.75 inches long
Item is in surplus condition
M203 Leaf Sight
The leaf sight assembly is attached to the top of the handguard. The leaf sight assembly consists of the sight, its base and mount, an elevation adjustment screw, and a windage adjustment screw. Elevation and windage scales are marked on the mount. The folding, adjustable, open ladder design of the sight permits rapid firing without sight manipulation. The front sight post of the M16-series rifle serves as the front aiming post for the M203 leaf sight.
- Sight Base. Two mounting screws permanently attach the sight base to the rifle handguard. When the sight is down or not in use, the base protects it from damage.
- Sight Mount and Sight. The grenadier uses the sight mount, which is attached to the sight base, to raise or lower the sight. Though the range is not marked on the sight in meters, the sight is graduated in 50-meter increments from 50 to 250 meters, which are marked with a “1” at 100 meters and a “2” at 200 meters.
- Elevation Adjustment Screw and Elevation Scale. The screw attaches the sight to its mount. When the screw is loosened, the sight can be moved up or down to make minor adjustments in elevation during the zeroing procedure. The rim of a 40-mm cartridge case is useful for turning the screw. Raising the sight increases the range; lowering the sight decreases the range. The elevation scale consists of five lines spaced equally on the sight. The index line is to the left of the sight. Moving the sight one increment moves the impact of the projectile 10 meters in elevation at a range of 200 meters.
- Windage Screw and Windage Scale. The knob on the left end of the windage screw is used to make minor deflection adjustments during the zeroing procedure. The scale has a zero line in its center and two lines spaced equally on each side of the zero line. At a range of 200 meters, turning the knob on the windage scale one increment to the left moves the impact of the projectile 1.5 meters to the right.