Small Texture Tweaks for Various Weapons addon

Just some texture/ mesh tweaks I did cause I was bored/ tired of the annoying shine on some models. Tweaks for: SOW's RG6 and Vintorez, Develop013's Mk22 Hushdoggo, the BF2 G3 as well as Combat mod's suppressed variant, Requin94's Glock 17 and M-14(Modified by Dodek), M.Combat's PM63 pack, Eversmen's Aek971, and EnemySniper's R870 with Cranestock and magazine.