OUT of production for many years, friend.
Look in the Parts section of the EE, MILSURPS and RIMFIRES both; somebody might have a set.
You will also need a Nos-cap; it looked something like an SMLE but that one will not fit.
Also, you need good photos to work from. Can anyone post a couple of good photos of an 82 for this man?
Many of these were released as surplus, then the forward portion of the Forestock (which fitted together under the Band) was thrown way. You may have to make one from a piece of Walnut.
Good luck!