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No. 4 Mk I
Booby Trap
Hardware available
The No. 4 Mk I is an obsolete pull switch, copied by Yugoslavia as the UDP-1. The assembly incorporates a spring-loaded striker running axially through a tubular brass body. The ball-shaped end of the striker is retained by the cupped ends of a U-shaped clip within the fuze body. The assembly is typically fitted with a percussion-cap detonator. The fuze is armed through the removal of a safety pin, and initiated using a tripwire attached to the...
More information available for No. 4 Mk I
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