Organic Support Weapons: M203 and Machine Guns
CHAPTER 13 ORGANIC SUPPORT WEAPONS: M203 AND MACHINE GUNS This chapter is a continuation of the discussion about weapons. Here you will learn about support weapons available to the Seabees. Information on the 40-mm grenade launcher, M203, the M60 machine gun, the .50-caliber Browning machine gun, and the MK 19, MOD 3, 40-mm, machine gun is provided. THE 40-MM GRENADE LAUNCHER, M203 When equipped with a grenade launcher, the Ml6A1 rifle becomes the 40-mm grenade launcher, M203, and loses its identity as the M16A1 rifle. Figure 13-2.—The 40-mm grenade launcher M203, controls, and their identifications. The launcher attachment is assembled by a qualified armorer only. As a member of a weapons platoon, you HANDGUARD AND SIGHT only have the responsibility for the employment, ASSEMBLY GROUP trajectory, method of firing, firing effects, malfunctions, and care and cleaning of the launcher attachment. The handguard portion of the assembly group is a The 40-mm grenade launcher, M203, mounted on molded plastic protective cover that fits over the barrel the M16A1 is shown in figure 13-1. It is a lightweight, of the Ml6A1 rifle. The cover prevents the operator compact, breech-loading, pump-action (sliding-barrel), from coming into contact with the barrel when it single-shot, manually operated weapon. becomes heated from rapid firing. The heat produced by the rifle barrel dissipates through the cooling holes and The launcher is approximately 16 inches in overall slots in the cover. The protruding plastic tab on the left length; it weighs approximately 3.6 pounds loaded and side of the cover prevents the barrel latch of the grenade 3 pounds unloaded.
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