RPC Posted October 2, 2019 Share Posted October 2, 2019 Can anyone offer a source and part number for the 5.5mm lock but securing the front blade sight on an M4? Thanks in advance. Quote Link to comment Share on other sites More sharing options...
RPC Posted October 2, 2019 Author Share Posted October 2, 2019 Cripes... *lock nut Quote Link to comment Share on other sites More sharing options...
StrangerDanger Posted October 2, 2019 Share Posted October 2, 2019 https://www.brownells.com/shotgun-parts/sights/sight-parts/front-sight-parts/front-sight-retaining-nut-sku301000502-23654-50339.aspx Quote Link to comment Share on other sites More sharing options...
Sigma05 Posted October 3, 2019 Share Posted October 3, 2019 Got one at Lowe’s hardware store. Quote Link to comment Share on other sites More sharing options...
RPC Posted October 3, 2019 Author Share Posted October 3, 2019 18 hours ago, StrangerDanger said: https://www.brownells.com/shotgun-parts/sights/sight-parts/front-sight-parts/front-sight-retaining-nut-sku301000502-23654-50339.aspx Terrific, thanks SD! Quote Link to comment Share on other sites More sharing options...
RPC Posted October 3, 2019 Author Share Posted October 3, 2019 24 minutes ago, Sigma05 said: Got one at Lowe’s hardware store. Any chance you recall the size? If no, I can just take the front sight in and figure it out. Thanks Sigma! Quote Link to comment Share on other sites More sharing options...
Sigma05 Posted October 3, 2019 Share Posted October 3, 2019 19 hours ago, RPC said: Any chance you recall the size? If no, I can just take the front sight in and figure it out. Thanks Sigma! It was a while back. Will see if I have a spare in tool box and get back to you. Quote Link to comment Share on other sites More sharing options...
RPC Posted October 5, 2019 Author Share Posted October 5, 2019 Before I make a trip to Ace, does the nut need to be replaced when the front blade is reinstalled? Feel like I read that somewhere but can’t find it again. Quote Link to comment Share on other sites More sharing options...
StrangerDanger Posted October 5, 2019 Share Posted October 5, 2019 It should be replaced. The nylock is meant for only one use. However some blue Loctite on it will keep it from coming off. Quote Link to comment Share on other sites More sharing options...
RPC Posted October 6, 2019 Author Share Posted October 6, 2019 Easy decision (replace), thx SD. Quote Link to comment Share on other sites More sharing options...
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