M4 Front Ghost Sight Loose?

[Richard B]

I picked up my Benelli M4 a few weeks ago and my front sight is loose.  When I tried to find a wrench that would fit they were all too thick to fit and I used needle nose pliers but the sight moves when tightening.  Suggestions?  Surprised it didn't come with a cheap wrench. Not sure why the front sight would need to be adjustable

 

[dmschwartzii]

5.5mm wrench

Edited August 18, 2021 by dmschwartzii

[dmschwartzii]

1 minute ago, dmschwartzii said:

5.5mm wrench

uxcell Metric Double Open End Wrench 5.5mm x 7mm https://www.amazon.com/dp/B07D4B8GWW/ref=cm_sw_r_apan_glt_fabc_CJ74FFP3H7MTJH0WDDQ8

[dmschwartzii]

28 minutes ago, Richard B said:

I picked up my Benelli M4 a few weeks ago and my front sight is loose.  When I tried to find a wrench that would fit they were all too thick to fit and I used needle nose pliers but the sight moves when tightening.  Suggestions?  Surprised it didn't come with a cheap wrench. Not sure why the front sight would need to be adjustable

 

Be advised the nuts are really easy to strip and and really only one use, you may also need a new nut.

[Unobtanium]

Place vibratite vc3 on the FS threaded post before reassembling. 

 

https://freedomfightertactical.com/products/5-5-mm-open-ended-wrench-for-front-sight-nut

[Gmcrigger2007]

 Snap-on tools sells a nice 5.5mm wrench as well.

[chrome_robot]

https://www.amazon.com/gp/product/B004W8D7LU/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

 

[Doge]

2 hours ago, chrome_robot said:

https://www.amazon.com/gp/product/B004W8D7LU/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

 

Oh wow! That is the same one Freedom Fighter Tactical sells for 4X the mark up + 13$ shipping!?

[bigoo7e]

Too bad Snap-On doesn't make these any smaller than 10mm, it would be perfect have one of these to tighten down and/or swap sights out.  

 

10 pc 12-Point Metric Flank Drive® Ratcheting Box/Speed Open-End Combination Wrench Set (10-19 mm) | SRXRM710 | Snap-on Store (snapon.com)

[StrangerDanger]

The ratcheting or closed box wrench type won’t work since there isn’t enough room to slip the wrench over the end of the nut in the tight space under the front sight tower. 
 

I bought the Craftsman ignition set about a decade ago.

[alpha 33]

12 hours ago, bigoo7e said:

Too bad Snap-On doesn't make these any smaller than 10mm, it would be perfect have one of these to tighten down and/or swap sights out.  

 

10 pc 12-Point Metric Flank Drive® Ratcheting Box/Speed Open-End Combination Wrench Set (10-19 mm) | SRXRM710 | Snap-on Store (snapon.com)

Maybe  someone here could have some made and make a few bucks. Stamped out of flat stock it certainly wouldn't take a whole lot of engineering or tooling up. Kinda like the "SRO" tool, only one dimensional. 

My 2 cents......... 

[Gmcrigger2007]

This is the Snap-On 5.5mm wrench that I had picked up.