TangoDown got available at their store a Trijicon RMR Mount For SIG Sauer P320. Not sure if this can be mounted on the SIG Air ProForce M17 GBB Pistol... "Just like our prior rugged optic mount plates, the SSM-03 provides a solid base for the popular Trijicon RMR®, along with our premium grade back up iron sights (available separately) to the system for fail safe performance. Whether your SIG Sauer® P320 is a competition pistol, or one that sees daily duty use, the SSM-03 with optional Back Up Iron Sights is the all-weather/all-environment choice.

The SSM-03 is precision machined from ordnance-grade steel, heat treated and then given a tough, durable Melonite finish for years of rust-free duty. All mounting fasteners are supplied, with Vibra-Tite VC-3 thread locking compound.

Features:

• Ordnance-grade 4140 steel plate
• Rust -resistant, durable Melonite finish
• Supplied qty 4, high grade fasteners with VC-3 thread locking compound"