TM 9-1375-213-12
tion firing devices M1 with 2 spools of trip wire
are packed in a chipboard box, 30 boxes (150 de-
vices with 60 spools) are packed in a wooden box,
weight 35 pounds or five devices with 2 spools of
trip wire are packed in a chipboard box, 1 box per
lead-foil envelope, 40 envelopes (200 devices with
80 spools) are packed in a wooden box, weight, 59
pounds.
(5) Firing device, demolition: M3, pull-re-
lease-type (figs. 1-28 and
1-29). This firing
device
is a mechanical device containing a percussion
cap. It is designed for actuation by either an in-
crease (pull) or decrease (release) of the tension
in a taut tripwire and is intended for use with
antipersonnel mine M3, improvised antipersonnel
mines, or in setting up boobytraps.
(a) The firing device consists of a head,
body, coupling base, firing pin, release pin, safety
pin, and winch assembly. The head, which is
crimped to the body, acts as a guide for the re-
lease pin. The body contains a spring-loaded firing
pin, in which the knob end of the release pin is
installed. The coupling base, which screws into
device M1A1.