ITS HARD TO TAKE A PICTURE WHEN GUN IS MOVING THATS WHY IT LOOKS LOW RES. BUT I PROMISE YOU ITS HIGH RES. have fun.

go to mods > update > x64 > dlcpacks > patchday3ng > dlc.rpf > x64 > models > cdimages > weapons.rpf
and drag the files and load the game

my mods look better with this enb mod https://www.gta5-mods.com/misc/hd-graphics