.... Here is a hypothesis to consider....
At 4:23, MB enters the building, I believe, within moments, SP aimed a laser light and shot once, as an expert marksman. The weapon causes some of the gait issues. SP is able to puncture with the tools after removing the dart in a determined effort to make it appear there was no shot at all. In other words, only the SP should know there was a shot and that the ammo is missing....
^ bbm sbm. Is it possible ^ post inadvertently confuses --
-- laser sights which are accessories/features attached on firearms to help shooter aim gun at intended target, to improve accuracy. https://en.wikipedia.org/wiki/List_of_laser_applications#Laser_sight
and
--- Tasers, a brand name for weapons which "fire projectiles that administer the shock through thin flexible wires." That is, Tasers shoot darts into person/target w wires keeping the darts attached/tethered to the weapon. Unlike a stun gun* https://en.wikipedia.org/wiki/Electroshock_weapon
Is theory in ^ post: SP had firearm w laser sight, like we see in TV & movies, where shooter aims gun at person/target's heart or center mass, & person/target looks down at own chest & sees little 'red dot' there.
Okay, could be, but where/how does 'the dart' enter the situation, esp. as something to be removed from person/target? Or maybe I'm misunderstanding the theory altogether. Entirely possible. Anyone? Thx in adv.
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* Tasers differ from 'stunguns' which administer an electric shock by direct contact with the person/target. To be effective, stungun shooter must be within ~ arms' reach of intended person/target, so the stungun has contact w. person/target's skin or thru thin clothing. Tasers can be used further away from person/target. Both Tasers & stunguns are electroshock weapons, designed to cause electric shock aimed at temporarily disrupting muscle functions and/or inflicting pain without causing significant injury.