i remember the knex pistol with a sear system that had a safety on it.
really though, whats the point of a safety on a knex gun? just leave the firing pin in instead of pulled out when you don't want to fire it.
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What he said.
Uh obl. made one based on trauts' and my side arms. It was simply a part on the handle that when down wouldn't get in the way with the trigger but when up it would block the trigger.
Yes the FX-9 pistol V1.2https://www.instructables.com/id/Knex-FX-9-Pistol-V12/
Yes. There are a lot of them around here.