Calculated Kinetics adapter plate that mounts a Trijicon SRO or RMR on a Glock MOS slide. Works with any generation Glock MOS - Gen 3, Gen 4, or Gen 5 / Gen 6 MOS configurations. For Gen 5 / Gen 6 specific cuts, see the Gen 5 / Gen 6 variant . What you get: Adapter plate cut for the Trijicon RMR / SRO footprint Fits Glock MOS slides - broad compatibility across generations 7075-T6 aluminum, hardcoat anodized matte black Mounting screws included Compatible optics: Trijicon RMR (RM01-RM09 family) Trijicon SRO (5.0, 2.5, 1.0 MOA) Holosun 507C, 508T, 407C, and other RMR-footprint optics Use case: If you bought a Glock MOS pistol expecting to mount an RMR or SRO and got the standard MOS plate set that doesn't fit those optics, this plate fills the gap. Plate-based mounting also keeps the slide milling intact if you ever want to swap to a different footprint later. GLOCK is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated in any manner with, or otherwise endorsed by, Glock, Inc. or Glock Ges.m.b.H. The use of "Glock" on this page is merely to advertise the sale of Glock pistols, parts, or components. For genuine Glock, Inc. and Glock Ges.m.b.H products, visit https://us.glock.com .