Rucker61 Posted March 14, 2016 Share Posted March 14, 2016 I shot the aftermarket fiber optic sight off of my M3K this weekend. What size replacement screw do I need? Link to comment Share on other sites More sharing options...
Mike9250 Posted March 14, 2016 Share Posted March 14, 2016 (edited) I went through this not long ago. I believe it's M2.6. Not easy to find however. M2.5 is more common, but fits loose. I found the M2.6, but had to trim it to length since the one I had was too long. I installed it with some blue loc-tite and it's been solid for about 400 rds now. Edited March 14, 2016 by Mike9250 Link to comment Share on other sites More sharing options...
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