Sig Sauer Universal Reflex Sight Mount Low Profile Universal low-profile mount for 1913 top rail;Multiple mounting positions for customizable optic placement;Includes reversible locator dowel pins for secure attachment;Compatible with popular reflex sights including: Sig Sauer: ROMEO1T, ROMEO1PRO, ROMEO2, ROMEO3, ROMEO3MAX, ROMEO3XL;Trijicon: RMR, SRO;Leupold: Delta Point Pro;Holosun: 507C, 407C, 508T;Shield: RMS, RMS-C, SMS;RX Footprint: PRO (DeltaPoint Pro), ROMEO3 MAX/XL;Attachment Type: M1913table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 4000 Product Group Code: 4000C Product Sub Group 1: 4000C2 Inactive: No Prop65 Applies: Yes Prop65 Cancer Harm: Yes