Description Mount, Romeo3 Max and Xl, Absolute Co-witness With the Sig Sauer Mount Romeo3-Max And XL Absolute Co Witness, you&';ll experience an undeniable increase in accuracy. This mount allows for a perfect co-witness with your firearm&';s iron sights, ensuring a seamless transition between close and long-range shooting. Skilled marksmen worldwide rely on Sig Sauer&';s superior quality to attain consistent, high-level performance on the range and in the field. Features Designed for ROMEO3-Max and XL sights Provides absolute co-witness with iron sights Durable and lightweight construction Easy to install on Picatinny rails