Shotshell primer perimeter alarm system with Kevlar tripwire and my added touch, a modified junction box for weather housing and holes to feed vines or camouflage netting through. : r/Survival

homfanseec Perimeter Trip Alarm, 12 Gauge Camping Trip

FITH Ops 209 Primer Perimeter Alarm - Gum Gully Provision

12ga. Camping Trip Alarms - Unusual shell loads!

Fith Ops™ Perimeter Camp Safe™ (209 Primer Only) Trip Alarm

homfanseec Perimeter Trip Alarm, 12 Gauge Camping Trip

Fith Ops™ Perimeter Camp Safe™ (209 Primer Only) Trip Alarm

Perimeter Trip Alarm, 12 Gauge Trip Wire Perimeter

Fith Ops™ Perimeter Camp Safe™ (209 Primer Only) Trip Alarm Kit - 209

12 GA ALARM PRIMER ADAPTER - Trigger Cannons™

Perimeter Trip Alarm, 12 Gauge Trip Wire Perimeter

12ga. Camping Trip Alarms - Unusual shell loads!

Trip Alarm Co – Perimeter Alarm & Trip Alarms

homfanseec Perimeter Trip Alarm, 12 Gauge Camping Trip