I have a few 3D printed AR15 FRT kits and 3D printed super safety kits (no trigger) laying around collecting dust now that I swapped over to a steel super safety setup
FRT Install is easy insert the block into the upper and replace the factory disconnector with the one from the kit
For the Super safety kit I’m sure YouTube has install guides
Text 512-995-0735 usually in the Austin/Buda area
In the pics above the super safety photo has my steel kit (right side) for reference