I’m not affiliated with Matrix Precision/Revenant Arms, but do have a lot of their stuff. If you are looking to do an 80% Sig Sauer P22X build… get them while you can!
I missed the cutoff by less than an hour when they first discontinued selling 80% frames and had to settle for a serialized P229 frame, but I did get the 80% P226 frame a few weeks prior. Their frames seem pretty nice. Need the lower parts for the P229 to finish it and need the P22X car for the rail cutter and drilling jig for the P226 to finish that frame up.