The C&H Precision V4 adapter plate enables secure mounting of Steiner MPS optics on Glock Gen 4/5 MOS pistols. Precision machined from steel construction with matte finish for durability and reliability.C&H Precision V4 Glock MOS to Steiner MPS Adapter PlateFits Glock 17/17L/19/21/22/23/26/34/35/40/41/45/47 Gen 4/5 MOSCompatible with Steiner MPS red dot sightsSteel construction with matte finishPatented stainless steel T-Nut with 6-7 threads of engagementReplaceable mounting hardwarePrecision machined on HAAS CNC machinesMultiple quality checks before shippingManufactured by a family-owned business in Coastal Georgia this adapter plate provides a secure precision-engineered solution for mounting Steiner MPS optics on your Glock MOS pistol with industry-leading thread engagement and replaceable hardware for long-term reliability.