Ok, I have added the finishing touch to the beast in form of a sling. After researching the slings used in the movie I found that they were a Enfield rifle sling used in WW2. These are still quite common to buy and I found 2 at a good price (2 slings are needed for the T-21), alas the shipping from the US to here was a JOKE.
Besides I have scratch built the whole gun so I thought I would have a go at making a sling.
Started with a ratchet strap, I cut this in half and sewed the 2 halfs together to make it thicker. I made the end clips out of a piece of gal. metal and wire.
A thinned out coat of acrylic paint tinted to a shade of tan was painted into the strap and a light coat of gold sprayed on to the clips to give them a brass look. A metal brace was cut and filed into shape for the mount on the stock.
All attached and ready to go.
Forgot to add in the first post that this can be broken down in two for transport.
Cheers.