Metal button upgrade kits for multiple materials, compatible with D4V2, D4K, DA1K, D3AA, D4SV2 etc with threaded switch retaining ring, it's not compatible with the press fit in switch retaining ring, not compatible with DM11, DM1.12, K1, K9.3 etc.
Use spaces to separate tags. Use single quotes (') for phrases.
Have no questions.