The customization could affect magazine size and damage.Lets say 10mm pistol is 3junk 1 wood. So lets say if you have materials for 2 of them 6juink and 2 wood you would be able to create 10mm pistol with 20% dmg increase. Just a suggestion lol. It could also sum the det points of 2 guns to 1. So the 1 gun would be 2 times as durableOf course all the customization should affect lvl1 and some lvl 2 stuff, not lvl 3 or lvl 2 BG.