Weaponsmith Archive

Far as I've been able to tell through some preliminary experimenation of grenade crafting. you cant affect blast radius at all. i'ev fiddled with all the experimenation lines on both final assembly and subs. Subs just seem to affect one of four things. SAC, Damage, Accuracy Bonus, And min/max throwing range.

Final assembly lets you affect the Dot, Acc, SAC, Damage, Throwing range. (Depending on nade type. Some dont let you experiment on acc or some other line by the looks of it. Protons have 5, the rest all seem to have 4 lines)

So it looks like your stuck with the 'base' blast radius. Not sure why you'd want to lower it really. AoE is the only thing the nades have going for them.