>>64432610
I'm not smart enough to be able to tell you or explain trigger geometry/mechanics, but I can tell you that usually the parts of the trigger that are being cut for FRTs are the backside profile of the disconnector (if the disconnector looks like a crashing wave, it would be the smooth back end of the wave not the crashing side) as well as the very back side of the trigger itself, usually a notch in the squared off profile in the back. These aren't crucial engagement surfaces that would affect the break or reset of the trigger, but you are taking off material making it lighter, which in theory would make a difference in some ways that I'm not knowledgeable enough to tell you. But basically, if it's cut to the spec that Hoffman or whoever is making your SS/FRT says, it should be fine regardless what trigger it is.

However if what you're also asking is "can I make a milspec trigger the same as a (insert aftermarket trigger here), the answer is probably "no" as usually these aftermarket triggers have completely different profiles/geometry which gives them their distinct pull weight, break, reset etc. You can absolutely improve a standard milspec trigger in all of these characteristics with reprofiling, polishing etc (or just by shooting the fuck out of it) but you can't change that geometry obviously.