game crashes when trying to apply unique upgrades eg armor piercings ammo for the pistol other then that ansolutely fantastic trainer flawless
To overcome this, use mega items, then drop the stack of unique upgrades. Pick 1 or 2 back up then use. This way you still get to keep some spare.
Some weapons seem to stop responding to the no relaod option after they have been modded. It doesnt always happen, but if it does, just make sure that you use the no reload before you add an upgrade, this way, at the very least, it will have 10k ammo in it