As above, Geoff - factory tyrolean with grip cap added.
Moderator and trigger are AirMasters (their moderators were slightly different, dare I say, better looking) than the Venom and Theoben/Zephyr models).
Put on heading 270, assume attack formation
Stock is a reworked weihrauch tryolean stock. They did them for 77, 80 and 85 and they are lovely, even better than a venom version. Trigger blade that looks venom! but could be airmasters as the mod is an airmasters one, the gold inlay on the writing is done just with gold paint and then just rub off!!.. still a nice find and getting rare to locate the factory T stocks.
Regards Mach 1.5