This is great. I tried using it with opp. force... well it was gordons arm so I'm begging you to do this also with opp. force and blue shift because I really dislike the stock and you did this very good.
Actually, there is. More than one. Looks like you haven't looked at "SPAS-12" category close enough. But i won't flag it... this time. There are other problems, that need to be addressed
To be honest, this work is rather unprofessional. Stock on v_model is placed strangely, and UV maps are incorrectly positioned. You know, after DoomMusic invented his new StudioMDL, misplaced UVs has become a sin. Not to mention, that it is rather easy to remove a stock from a shotgun
Gotta admit though, that rear sight is at least at its place. Many people are removing the rear sight, for some reason