GUNS_M_PV_AR.rez(Model) and GUNS_T_PV_AR.rez(texture color) extract and u just need to go into the folder of each and use the search of windows and write M16 and M416CQB and swap the M416CQB file to the M16 files, thats all, sorry i have being working with some mod to the M416CQB to make it see better @.@ /slur
Edit: done editting and testing, here it is, sorry =P, its have the LTB and DTX files not the *.rez, it have the rezinjector inside too, and don't forget to make a backup.(the rezinjector make a new *.rez
called *.rezNew don't forget to erase the "New".
haven't try it with scope, so well u do the try and tell me, give it a try and make me know.