Buy it online and ship it to an ffl and save quite a bit. Silencer shop has a list of FFLs you can look up around you. I found one down the street from me doing that. Probably didn't save me anything in the long run cause its too easy to ship guns to him now!
I have a rugged surge and it is a sweet modular can. 30 cal and 5.56 end caps, 7.5 inch or 9 inch length.
Solvent kits are perfectly legal as long as the baffles and endcap are not drilled. Everyone knows what a “solvent kit” is really about and those that don’t follow the proper channels are the reason for the shutdowns. With the proper form 1 paperwork and approved tax stamp you can legally modify the so called “solvent trap” into a working suppressor but NOT without the tax stamp. Having said that I can understand your apprehension, I was the same.