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M67



Introduction


M67

M67 fragmentation grenade shown in hand.
Source: US DoD - © Public domain

Origin
United States
Type
Hand grenade
Entered service
Late 1960's
Status
In service
Development
Late 1950's
Developer
United States - US Army Material Readiness Command
Production
Late 1960's - present?
Producer
United States - US Army Material Readiness Command
Canada - General Dynamics
Unit cost
About $4 for M67
Number produced
Produced in large quantities
Designations
Baseball Frag (popular nickname)
C13 (Canadian designation for M67)
Notable users
United States
Canada

Description


Introduction

The M67 is an early Cold War era hand grenade of US origin. The M67 was developed to replace the earlier M26 series. The M67 is smaller and lighter and can be thrown over longer ranges. The M67 was known as the M33 before the product improvement program. Reportedly the M67 has a shape and weight similar to a baseball, which would decrease training costs as many US soldiers would already be familiar with throwing a similar shaped object with accuracy.

Design

The M67 is a defensive grenade. The M67 started out as the M33 and is essentially and M33 with additional safety clip. The M67 has a spherical body and features a large safety lever. The fuse is in the center and surrounded by explosive. The steel outer body will turn into fragments upon explosion. The M67 has a 4 to 5 second time delay fuse, which starts as soon as the safety lever is released. The M68 is a derivative with impact fuse.

Firepower

The M67 is filled with Composition B explosive and the steel body will turn into splinters. The casualty radius is 5 m and wounding radius is 15 m. Fragments may reach as far as 250 m. The average soldier may throw the M67 out to 30 m and ranges of 40 m can be achieved.

Users

The main user of the M67 and M68 grenades is the US military. It also has been exported to various nations, including Canada.

Variants


The M67 is a delay fragmentation grenade. It has a spherical body and large safety lever. The time delay is 4 to 5 seconds. The original designation is M33, when fitted with an additional safety slip it is called the M67.

The M68 is an impact derivative of the M67. At first it was known as the M33A1, later renamed as the M59 and when fitted with an additional safety clip it is called the M68. The body, filling, weight and dimensions are identical to the M67. The difference lies in the fuse, which is an impact fuse. The unusual feature is that this impact fuse has a time delay as backup. Should the grenade not explode due to the impact then after 7 to 9 seconds the time delay fuse will detonate the grenade.

The M69 is an inert training versions. Due to the US adoption of safety clips the M33 and M59 are uncommon compared to the widely proliferated M67.

M67

M67 hand grenade.
Source: US Air Force - © Public domain

Details


Facts M67 M68
General
Origin
United States
Type
Defensive hand grenade
Dimensions
Diameter
64 mm
Length
90 mm
Weight
0.390 kg
Composition
Fuse type
Time delay, 4 to 5 seconds
Fuse model
M213
Filling
185 g Comp B
Fragments
Pre-notched steel body
Effect
Lethal radius
5 m lethal radius
15 m casualty radius
Application
Projection method
Hand thrown
Range
30 to 40 m

Media