DIY Grappling Hook Launcher
You can buy a grappling hook launcher, but they're expensive. Instructabl...
https://www.neatorama.com/2011/08/23/diy-grappling-hook-launcher/
Pneumatically-Launched Grappling Hook
Defense contractor Battelle has developed an impro... ...has developed an improved pneumatically-launched grappling hook. From a press release: The Tactical Air... ...Launch (TAIL) system is used to launch a titanium grappling hook towing a Kevlar line for use in Visit Board... ...eet away. “The TAIL sy...
https://www.neatorama.com/2010/11/23/pneumatically-launched-grappling-hook/
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