RJHUB Posted June 2, 2021 Share Posted June 2, 2021 Anybody got any heads ups on swapping out meprolight inserts with factory sights on M4. Got some coming and always like to see if there are anything tricky or special tools needed/suggested. Thanks, Russ Quote Link to comment Share on other sites More sharing options...
sonyman74 Posted June 2, 2021 Share Posted June 2, 2021 I installed the rear part but the factory nut for the front was too big for the Meprolight front post. So, I put the factory post back on and have the others sitting in a bag in my parts bin. Its fairly easy to do. Just sucked I couldn't finish with the whole install. Quote Link to comment Share on other sites More sharing options...
FFMichael Posted June 2, 2021 Share Posted June 2, 2021 Rear and front both worked fine for me. Make sure you use loctite on the front post. Quote Link to comment Share on other sites More sharing options...
StrangerDanger Posted June 2, 2021 Share Posted June 2, 2021 5.5mm wrench for the front. It can be a pain in the ass to get the nut started. For the rear it is pretty easy. Just observe where the spring goes as you disassemble it. 2 Quote Link to comment Share on other sites More sharing options...
RJHUB Posted June 3, 2021 Author Share Posted June 3, 2021 Thanks all. I will report back when they show up and I install. Hope my front works. That's the one I plan on seeing. Quote Link to comment Share on other sites More sharing options...
Fullassault Posted June 3, 2021 Share Posted June 3, 2021 Be careful with the front, the mepro front post is made of very soft metal and the threads will strip very easily. 1 Quote Link to comment Share on other sites More sharing options...
RJHUB Posted June 3, 2021 Author Share Posted June 3, 2021 Will do. Thanks Quote Link to comment Share on other sites More sharing options...
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