Resident Armorer Premium Member
Those G-10s were OEM on the Elites. They were made by Spaulding Composites Incorporated for Sig, here's the photo of the inside data... the grip screws are known as Grip-Screw-4, used on P229s, and are Torx.Where did you find those grips and grip screws?
Sig did have them on their website, but currently not there. You may want to check ebay, or Gun Broker.