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Nitecore NTP31
NITECORE NTP31 is a uniquely designed aluminum alloy bolt action tactical pen. The three position bidirectional bolt action allows you to pop out the pen tip or windows breaker, or retract both for everyday carry.
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Understand it first
Land navigation your phone can't give you
Map, compass, pace count, and terrain association — the Army way (TC 3-25.26), for the day the battery dies.
Survival priorities, straight from the field manual
The rule of threes, fire, water, and signaling — what FM 3-05.70 actually teaches, minus the TV drama.