Hello!
1. It looks like shotgun and sawed-off shotgun have 2 barrels, it would be quite nice to make an option like a double shot from 2 shells ( single shot 4 ap - normal dmg as now, double 6 ap - doubled). Then weapon would be both, realistic and quite useful. Double shots should deteriorate weapon faster then normal ones.
2. RadX and Radaway seem not to be useful right now, there should be radioactive places ( like gecko, mariposa, military base, gunners fortresse in boneyard, some barrels with sign of radioactivity), when you enter those places you get radiated ( radx would decrease the level of radiation your player absorbs, and rad-away takes it away in some amounts)
3. If we make boneyard fortress radiated , there can be placed a repeatable quest with delivery of rad-x/rad-away for people ( especially medic profession). I left reward for this quest to Developers consideration.