Containment What If?

The closest Chris could ever get to a violent rampage would be if he tried to hit people with his car. Though I think that's really damn unlikely. He'd be more likely to hit somebody accidentally while either fleeing a scene where the cops have been called on him or because he's a shit driver and got distracted.
 
Unlikely, Megatron burned up (and as a combination Transformer/shitty spring-loaded airsoft gun, was all bark, no bite), if Bob really had the deer rifle and revolver, they are probably burned with whatever's left rusting rapidly, he doesn't know shit nor Shinola of gun shows and the black market for firearms, he would blow himself up trying to make bombs, and he himself is all bark and no bite. We do not have a second coming of James Huberty, George Hennard, Billy Ferry, Michael Ryan, John Alan Muhammad or Ira Attebury, since he is too much of a pussy and his only targets would be Snyder, Mimms, MLW, Tiffany Gowen or Sarah Bevel, who are all making themselves harder for OPL to find. And regardless of whether he used the Caddy, the van or (if it didn't burn up) the BMW, as a getaway car, between vanity plates and execrable mechanical condition, a car chase would end poorly.

At most we can see him going to the joint by using one of :snorlax:'s kitchen knives in a retarded attempt to end Snyder or Sarah Bevel.
 
Unless Chris commits himself to the True and Honest Path of Hulkamania he won't be doing anyone any harm physically. If he tries to get a gun his background check will probably preclude him from acquiring one (maybe, I'm not an expert on this). The worst the Manboy Blunder can do is hit someone with his car again.
 
The guy's fat, stupid and poor.

Not only can he not afford a gun on his tugboat, he doesn't know proper gun care, he would fail a background check near instantly for attempting to kill a guy with his car, he wouldn't know how to conceal a weapon and he'd most likely miss and not hit anyone before someone tackles him to the ground and the police are called.

Chris is also not a psychopath. He doesn't have the inclination to hurt people just because it pleases him in some sadistic way. He just got angry at Snyder because he didn't let him into his store.
 
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