Sig Sauer® P320-M17 Pistol - Modular Red Dot AdapterOuterImpact is excited to introduce the Modular Red Dot Adapter for Sig Sauer P320 M17, M18, X 5 Legion. This product will allow the shooter to utilize a variety of red dot sights on their Sig Sauer P320 M17, M18, X 5 Legion with one adapter. We at OuterImpact have gone to great lengths to assure that the fit and finish of this system are top notch. We have been excited about the increased popularity of the Mini Red Dots on pistol platforms.