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    Practical Guide to the Operational Use of the M203 Grenade Launcher
    Practical Guide to the Operational Use of the M203 Grenade Launcher
    Practical Guide to the Operational Use of the M203 Grenade Launcher
    Ebook164 pages47 minutes

    Practical Guide to the Operational Use of the M203 Grenade Launcher

    By Erik Lawrence

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    About this ebook

    The most current, up to date, full color manual anywhere on the M203 Grenade Launcher system.

    Authored by Erik Lawrence, former Special Forces Instructor and owner of one of the most realistic and experienced training companies in the US.

    116 pages of great to know information with procedures that have been vetted over time.

    100+ color pictures to better explain the listed procedures.

    Developed for weapons familiarization classes and instructor development...the best Team Room reference library available.

    The objective of this manual is to allow the reader to be able to use the M203 Grenade Launcher system safely and competently.

    The practical guide will give the reader:

    * background/specifications of the weapon and its capability
    * Multiple descriptive photographs
    * instructions on its operation
    * disassembly and assembly procedures
    * proper safe firing procedures
    * malfunction and misfire procedures

    Operator level maintenance will also be detailed to allow the operator to understand and become competent in the use and maintenance of the M203 Grenade Launcher system.
    LanguageEnglish
    PublishereBookIt.com
    Release dateApr 26, 2016
    ISBN9781941998298
    Practical Guide to the Operational Use of the M203 Grenade Launcher

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      Book preview

      Practical Guide to the Operational Use of the M203 Grenade Launcher - Erik Lawrence

      Section 1

      Introduction

      The objective of this manual is to allow the reader to be able to use the various M203 40mm grenade launching weapons competently. The manual will give the reader background/specifications of the weapon, instructions on its operation, disassembly and assembly; proper firing procedure; and malfunction/misfire procedures. Operator-level maintenance will also be detailed to allow the reader to understand and become competent in the use and maintenance of the M203 Grenade Launcher.

      Description

      The M203 40mm Grenade Launcher is used while attached to an M4/M16A2 5.56mm rifle. It is a lightweight, compact, breech-loading, pump-action, single-shot launcher. The launcher consists of a hand guard and sight assembly with an adjustable metallic folding, short-range blade sight assembly, and an aluminum receiver assembly which houses the barrel latch, barrel stop, and firing mechanism. The launcher is capable of firing a variety of low-velocity 40mm ammunition. The launcher also has a quadrant sight, which may be attached to the M16A2 carrying handle and is used when precision is required out to the maximum effective range of the weapon. The M203 was designed and procured as the replacement for the M79 grenade launcher of the Vietnam era.

      The M203 generally refers to the United States Army designation for a single-shot 40mm grenade launcher that attaches to the M16 assault rifle or the M4 Carbine. Stand-alone variants exist, as do versions capable of being used on many other rifles. The device attaches under the barrel and forward of the magazine, the trigger being just forward of the rifle magazine. The rifle magazine functions as a hand grip when firing the M203. A separate sighting system is added to rifles fitted with the M203, as the rifle's standard sights are not matched to the launcher. It creates a versatile combination weapon system capable of firing both 5.56mm rifle ammunition as well as the complete range of 40mm high-explosive and special purpose ammunition. The M203 can fire high-explosive, smoke, illuminating, buckshot direct fire, CS gas, and training grenades.

      The characteristics of the M203/M203A1 Grenade Launcher:

      1. COUNTRY OF ORIGIN: USA

      2. MILITARY DESIGNATION: M203, M201A1, M203A2, M203 PI

      3. CARTRIDGE TYPE: 40 x 46mm low power grenade cartridges

      4. TYPE OF FEED: Single shot

      5. LENGTH: Barrel- 9 inches/23 cm and 12 inches/30.5 cm

      6. MUZZLE VELOCITY: 250 fps/76 mps

      7. WEIGHT :

      a. Launcher : 3 pounds/1.4 kg

      b. Rifle (M16A2) : 8.8 pounds/ 4 kg

      a. Total (including 30 rounds) : 11.8 pounds/ 5.4 kg

      8. MAXIMUM EFFECTIVE RANGE :

      a. Area target : 1150 feet/ 350 m

      b. Point target : 490 feet/150 m

      c. Maximum range : 1310 feet/ 400 m

      d. Minimum arming range: 45-125 feet/ 14-38 meters

      9. MINIMUM SAFE RANGE :

      a. Training : 425 feet/ 130 m

      b. Combat : 100 feet/ 31 m

      Figure 1-1 M203 Range Diagram

      Background

      The M203 was introduced to U.S. military forces during the early 1970s and replaced the older M79 grenade launcher and conceptually similar Colt XM148 design. However, while the M79 was a separate weapon entirely, the M203 was designed as a rifle attachment in order to increase the efficiency at which an operator could alternate between bullet fire and HE grenade fire.

      A new grenade launcher in development, the XM320, will likely replace the 203 in United States service eventually. The XM320 weighs more than the M203, but has some added benefits.

      The M203 40mm Grenade Launcher was designed and procured as the replacement for the M79 grenade launcher of the Vietnam era. In August 1969, the Army accepted the M203 40mm grenade launcher attachment for the M16A1 rifle. The M203 replaced the M79, uses the same ammunition, and provides the operator with a weapon that is both a rifle and a grenade launcher. The M79 served only as a launcher and deprived the rifle squad of two rifles. When Picatinny teamed the M203 Grenade Launcher with the M16A2 rifle, it gave a single infantryman more firepower than an entire infantry platoon with artillery support had in the Civil War.

      Design

      The M203 is a single-shot, breech-loading weapon with rifled barrel. The loading is achieved by sliding the aluminum barrel forward and then inserting the round of ammunition into the breech and sliding the loaded barrel back into the battery. The barrel is held in-battery by the manually controlled lock, which is disengaged by depressing the barrel catch lever at the left side of the launcher, above the middle of the barrel. The loaded cartridge is held at the breech face by the extractor claw and remains stationary when the barrel is opened forward. Once the barrel clears the fired case or unfired round, it is free to fall down from the breech face so the next round can be loaded if necessary. The self-cocking firing unit with its own trigger is located at the rear of the M203 receiver, also made from aluminum alloy. The manual safety in the form of the swinging flap is located inside the trigger guard, just ahead of the trigger. The rear part of the barrel is covered with a polymer handgrip. The standard M203 easily installs on the M16A1 and M16A2 rifle. If necessary, the M203 can be mounted on separate shoulder-stock/pistol-grip assemblies (available from several companies, such as Colt or Knight's Armament) to be used as a stand-alone weapon.

      Figure1-2 Left side photo of launcher

      M203 Grenade Launcher Nomenclature

      Figure 1-3a Trigger Guard and 1-3b Trigger Guard open for mittens

      Trigger Guard- The trigger guard protects the trigger. A complete self-cocking firing mechanism, including barrel latch, trigger, and positive safety lever, is included in the receiver, allowing the M203 to be operated as

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