How to you remove this to install an new one, my swivel stub broke off in this one and Mossberg is sending me a new one but how do I get the old one off. Thanks for the information.
They sell a special tool for removing that ring.
I have one but when I cannot find it (Every time I need it)
I use a thin bladed flat head screw driver pushed up in there to hold the retainer ring in place
as I unscrew the barrel nut from the barrel.
Works every time!
It should come off no problem like that.
I have done it a dozen times that way.
Here you go! Easy Peasy and you can reuse the ring if you choose to re-install it. Insert jeweler's screwdriver as shown, then unscrew the takedown screw from the clip... Note the driver fits tight enough the clip holds it in place.
PS: also note where I choose to mount my sling swivel...