If you played R6: Siege with the golden deagle gamemode you will find this familiar. This mod gives a whopping 1000 damage to the deagle and reduces magazine capaity to 1.

warning: gun nut basic still gives you 5 more bullets to the magazine, it's cheating if you use it. (I don't know how to fix it yet)

*cannot pick up ammo from pouches
*max ammo set to 20
*stability set to 0
*can penetrate shields

put it into mods folder

Have Fun!