Triangular Sling Swivel Drawings

Good evening gurus. Im looking into more make and machining projects. Does anyone have any drawings (complete or partial) for the MoD and PH style Triangular Sling Swivels to replace the front trigger guard screw on No1 and No4 rifles.

I will be making machine drawings from all sources and samples.
These have been really popular in the stores and shows and supply seems to be dwindling.

More parts projects in the works - just increasing complexity with the local machine shop.
:cheers:

Can't help with drawings, but it looks like Gunparts has them in stock.

Parker Hale Miscellaneous | Gun Parts

They do for now. I've been selling them steadily and feel supply dwindling, so would like to have at least good drawings and machine shop pricing ready.