Holosun 407/507K Adapter for RMR featured and a flared base plate

and a flared base plate for positive control and ease of retrieval

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and requires an adapter plate for slides with a four-boss interface

Holosun 407/507K Adapter for RMR featured and a flared base plateThe Holosun K RMR adapter plate is a precision machined mounting solution designed to fit Holosun 407K and 507K series reflex sights to RMR (Ruggedized Miniature Reflex) footprint mounts. This adapter plate provides a secure, reliable mounting platform for your compact optic. Precision Fit Engineered specifically for compatibility between Holosun K series compact reflex sights (407K and 507K models) and RMR footprint mounts, this adapter ensures