Missing the correct part - Aero Precision M5 .308 Enhanced Lower Parts Kit w/No FCG or Pistol Grip

I bought a stripped LR308 lower, then got the AERO parts kit. The bolt pivot pin in lower had a screw pin NOT for a roll pin. I guess you could say the people who made the lower should have mentioned that it would need the threaded pin and NOT the roll pin. OR maybe Aero should have mentioned it was not a fit all kit. At any rate I had to buy screw pins form DPPMS at 7.00 ea.