IJNagato

Go to your Grand Theft Auto V\lspdfr\data folder and edit the inventory.xml BUT BEFORE YOU DO, COPY THE FILE TO DESKTOP AS BACKUP.
To edit, just use Notepad, you dont need any "fancy" app/programs for this, just edit the inventory.xml and locate where it says "<Name>Patrol</Name>" now under that it should show <Weapon chance="45">WEAPON_PISTOL</Weapon>, now replace WEAPON_PISTOL with weapon_pistol_mk2 and that will give you the mk2 every time you go on patrol or when you go on patrol sellect Patrol as inventory.
Then just save file and go into the game and try it.
You can replace all the weapons in that file if you like, here is a link to weapons id page: https://wiki.rage.mp/index.php?title=Weapons
and this page is good to have too https://wiki.rage.mp/index.php?title=Weapons_Components
You can even add more to your list of weapons, just add new lines that match those and ofc. replace the ID with the new weapons you like.
Also, the higher the number Weapon chance="45" is, the better chance of you getting that weapon every time you go on patrol.
Good luck.
Eaza.

Texture Loss can be extremely frustrating. Here are five possible steps to prevent it:

Step 1
Go into GTAV/lspdfr/lspdfr.ini & set Main.PreloadAllModels to false.
Step 2
Installing the Resource Adjuster.
Step 3
Removing high polygon vehicles. Anything above 200,000 may cause issues. To check this, open the vehicle .yft file and check the top left of your screen.
Step 4
Downgrade any 4K textures.
Step 5
Lowering your texture quality within the GTAV settings.