US Military issue Grappling Hook that's shot off M4 or M16 : r

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Precision Reflex

TRG - Mil Grabber-TRG-MG

Capewell Retractable Grappling Hook

M16, Call of Duty Wiki

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Issue 69 - Xmas 2016 by Airsoft Action - Issuu

Launched Grapnel Hook

Issue 11 - Jul 2012 by Airsoft Action - Issuu