MAGABomber?
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Nah...just some cheap ‘RAT who didn’t want to pay for real movie props so made up his/her own homemade phony “bomb” props.
https://inertproducts.com/movie__film____tv_props
Looks like the perp(s) were trying to make their ‘devices’ look like the M-60/M-80 fuse igniters. Why? Did they have access to used M-60/M-80 igniters, and didn’t know they were friction igniters, and not detonators?