A HAND GUARD ASSEMBLY. The molded plastic hand guard assembly fits over the barrel of the M16 series rifle.
B QUADRANT SIGHT ASSEMBLY. The quadrant sight assembly is attached to the carrying handle of the M16 series rifles and M4 series carbines. It provides range selection from 50 to 400 meters in 25 meter increments.
C RECEIVER ASSEMBLY. The aluminum frame mounts to the underside of the M16 series rifles and M4 series carbines. The receiver assembly houses a firing mechanism and an ejection system, and supports the barrel assembly.
D BARREL ASSEMBLY. The barrel assembly consists of a specially treated aluminum barrel and a plastic handgrip assembly. The 12 inch long barrel with six narrow lands is chambered for special 40mm grenade launcher ammunition. The barrel assembly slides forward and backward under the receiver assembly in sliding tracks.
E LEAF SIGHT ASSEMBLY. The folding leaf sight assembly, located on top of the hand guard assembly, provides range selection from 50 to 250 meters in 50 meter increments.
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