kmc0929 Posted May 3, 2010 Share Posted May 3, 2010 I asked this before but have yet to get an answer, has anyone been able to get an actual specific size wrench for the front sight nut on an M4 shotgun? I can't get a hold of anyone at Benelli that seems to know this... Looking for an exact size wrench, I am sure one exists, how would they put them on at the factory... [email protected] Quote Link to comment Share on other sites More sharing options...
TacticalKoala Posted May 3, 2010 Share Posted May 3, 2010 I asked this before but have yet to get an answer, has anyone been able to get an actual specific size wrench for the front sight nut on an M4 shotgun? I can't get a hold of anyone at Benelli that seems to know this... Looking for an exact size wrench, I am sure one exists, how would they put them on at the factory... [email protected] A 5.5mm (7/32") open ended midget wrench is what you will need. Quote Link to comment Share on other sites More sharing options...
kmc0929 Posted May 3, 2010 Author Share Posted May 3, 2010 well thats what I used. is it really a very low torque type thing, because mine stripped at about hand tight. the fit of that wrench just seems a little off. almost like it needs to a be a 5.25mm wrench. Quote Link to comment Share on other sites More sharing options...
Super33 Posted May 4, 2010 Share Posted May 4, 2010 A 5.5mm (7/32") open ended midget wrench is what you will need. That's a tad big. I just installed my mepro sights today and used that same wrench. It was a little loose so be careful when you're tightening it down. LOVE the sights though. Quote Link to comment Share on other sites More sharing options...
Hookster Posted May 4, 2010 Share Posted May 4, 2010 I used the 5.5 and haven't heard of anyone having an issue getting it on or off while using that size. If there was an issue, Brownell's has replacement nuts. Later, Hookster Quote Link to comment Share on other sites More sharing options...
TacticalKoala Posted May 4, 2010 Share Posted May 4, 2010 It is an acorn nut they are tapered. Take it off throw it away and go to Lowes, Mernards or any place that sells every nut known to man. Take your site post with you and find a nut that fits without having to pay through the nose for it. Reinstall with green loctite. Quote Link to comment Share on other sites More sharing options...
StrangerDanger Posted May 4, 2010 Share Posted May 4, 2010 The acorn nut has a nylock washer. So consider it a one time use type of item. Brownells sells a replacement. Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted May 9, 2010 Share Posted May 9, 2010 I used the 5.5 and haven't heard of anyone having an issue getting it on or off while using that size. If there was an issue, Brownell's has replacement nuts. Later, Hookster They are VERY easy to round, as the nut Benelli uses is very soft. I suggest buying a couple of them for a few $$ at the same time you order your sights. It is a good back-up if you round 'em. I consider it a 1-time use as stated due to the nylon insert. Quote Link to comment Share on other sites More sharing options...
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