For everyone with ID issues, it's this easy
Step 1 : Open file explorer and locate the folder :
C:\Program Files (x86)\Steam\steamapps\workshop\content\304930\2072491542
Step 2 : Download Notepad++ (you'll need this)
Step 3 : Inside the 2061956253 folder several layers in until you see a bunch of sub folders
Step 4 : Type in the search bar " .dat NOT english.dat " (NO QUOTATION MARKS)
Step 5 : Wait for everything to load
Step 6 : Once you have all the files visible, do CTRL + A (select all)
Step 7 : Right click and select "Edit with Notepad++"
Step 8 : Once all are open, find an id range that is available
Step 9 : Press CTRL + F and go to the tab "Replace"
Step 10 : In the Replace tab, make sure these options are selected :
http://prntscr.com/s992id
Step 11 : Go to where it says " Find what : _______\/ " and type this :
http://prntscr.com/s9930p
Step 12 : Then type in the " Replace with : _______\/ " and type this :
http://prntscr.com/s993hs
Step 13 : REPLACE THE XX WITH WHATEVER TWO NUMBERS YOU'D LIKE TO USE SO LONG AS IT IS JUST TWO NUMBERS (OR 1) AND DOES NOT EXCEED 64
NOW YOU HAVE TO ALSO DO THIS FOR EVERY OTHER INSTANCE OF OLD IDS OR IT WILL NOT WORK. Do the same for magazine, barrels, sights, etc. until all the old ids are replaced.
(I used 13 so it looks like this : http://prntscr.com/s9945z)
Step 14 : This is what it should look like, the replace field should have the new two ids you want to use : http://prntscr.com/s996h2
Step 15 : Press "Replace In All Opened Documents" : http://prntscr.com/s997et
Step 16 : Voilla, profit

Are you seriously asking me this? You cannot remeber just two number shift. This literally shifts all IDs by two just for you, so you see "19" but hopefully can say to yourself "That's right, with this nifty little guide my new IDs are 13! Thanks Voldoya!"