If I had an 870 or Mossberg 500 I'm sure I could buy a magazine cap with a sling swivel stud on it but this is a ManuFrance gun.
I can get replacement parts but I haven't found any modification parts.
The back of the magazine cap wasn't flat so I filled the big drill dimple with epoxy in order to give my swivel washer a large bearing surface on which to rotate.
I made a swivel stud and a threaded washer for the back of the magazine cap.
Both tapped 1/4-28.
The stud is a cut-off 1/4-28 bolt.

Here's the back of the magazine cap with my threaded washer installed.

Blued and assembled.

Slung.

I Loctited the stud into the swivel and then Loctited the stud into the washer so I have a smooth rotation of the swivel without play.
I can get replacement parts but I haven't found any modification parts.
The back of the magazine cap wasn't flat so I filled the big drill dimple with epoxy in order to give my swivel washer a large bearing surface on which to rotate.
I made a swivel stud and a threaded washer for the back of the magazine cap.
Both tapped 1/4-28.
The stud is a cut-off 1/4-28 bolt.

Here's the back of the magazine cap with my threaded washer installed.

Blued and assembled.

Slung.

I Loctited the stud into the swivel and then Loctited the stud into the washer so I have a smooth rotation of the swivel without play.


















































