Import Black Mesa Weapons and Animations into HL2

Black Mesa Archive Help!
#1

I am not sure if this is the right subforum for this, nor if this topic has been done before. Basically, I want to do this, except the opposite. I want to port Black Mesa skins and animations into Half-Life 2. Well, actually, I only really want the SPAS-12 Shotgun skin and animations from BM. I have both of them installed and on Steam. I have ported over a bunch of custom models and animations so I have basic experience with this.

So, is this possible? If so, how can I do this?

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.