F Ameriglo Serrated Grn Trit 2-Dot w/BLK OTL .270" H .165" Sq #10 Notch Rear Sight for SIG/Sprgfld Most SIG and XD Models and Hellcat (non OSP) XD-875R $47.99 XD-875R show more like this Free Shipping over $250 Eurooptic