Sup everybody, so, there is something I wish other mods or the own game would add, it's the Raven shotgun (KSG) iron sights or the Flip-up iron sight for the other shotguns like Locomotive and others, and the CAR-4 (M4) iron sights for the others assault rifles like M16 and others. 
I think i'd make sense and it'd be very nice as there is some mods that already adds stuff from other guns like the Extra Attachment Compilation which is a mod I like and I use, and it adds the MP7 and Mk17 and others grips for the other guns.

So, I tried once but I'm not good enough even if it's a simple thing to do, so I came here to ask someone as if it might help some other people.
Thanks anyway and sorry for bad english or making a long post.