is it too much to ask for you to turn this into a one handed version? like what the terminator has...

haha I suppose so and yeah I don't post on this profile. I rarely have posted mods besides on one of my alts for ZPS and they have been taken down since a while back because an update broke them. I just make mods for friends or help people/pass my mods out when I make them if people ask for them. Haven't posted screens of any in a while but feel free to look back in my old NMRIH screenshots for some, I mostly did modding before workshop was even out. I really should dump all my mods on here but I've just been lazy haha

the more we talk here, the higher on the most popular mods this will be
I don't see any mods on your profile, maybe you're using a backup?

No problem man, we only learn from new experience after all; just glad I could help a bit. And yeah, don't change the placement of the collision (I do not recall if it'll mess with consistency though you might be correct, can't say I've tried)
I still from time to time enjoy making mods, mostly for this and other source games (ZPS/L4D2) So if you ever need any help feel free to message or comment on my profile rather than talking on your mod page haha

Thank you for telling me that I had to edit that model, when I imported it to blender, the model was off to one side and I didn't think I should change it. Not to mention that I think that you shouldn't edit those right? To maintain consistency with other players while online

Thanks alot, man. I really have no idea what I'm doing

Been a while since I've done a full weapon mod but I'm 98% sure the lighting issue is because your using the old physics model from the original lever action, which often times will work if the models are roughly the same shape but in this case it is not since you made alterations. Essentially though all you need to do is make a new collision mesh (https://developer.valvesoftware.com/wiki/Collision_mesh) and recompile with that as your physics model. Not only should this fix the odd rolling you're having on the world model while on the ground but it will also allow the lighting to properly effect the model as well.
Hope this helps bud, great work by the way; loving your little mods. Always great to see new content, keep it up man