Added in custom stock attachment for Payday 2 M308, that changes the gun to what Dokkaebi used during her time in Rainbow 6 Team.

Converts M308 to single-fire action only and a boost on ammo pickup, with more controllable recoil at the cost of accuracy penalty.

Thanks to Hisao for the texture work and edit.
Thanks to LunaticLunarian and Killerwolf help on optic stances correction code

As Always,

Requires BeardLib
Requires WeaponLib

> Put in "mod_overrides" folder