I don't even like the lines. The beveled edges are ok, but the wavy lines are dumb. I'm gonna be buying a sig 150 soon and it'll always have the black silicone sleeve on it anyway. If they wanted to change something, they should have used a stainless steel, spring loaded connector that has an integral 22mm landing pad. Basically a fatdaddyvapes 510 that has the 22mm landing pad. Recess it so the landing pad is flush with the top of the mod. That would actually be an improvement.