I have done some modifications to the standard mk2 dewat to achieve a fairly accurate representation of the mk5. Modifications include:
-New tube so the safety notch is positioned properly
-Trigger housing lengthened and welded block inside housing for newly made pistol grip
-Reworking the buttstock by cutting off the loop and replacing with a modified Enfield stock
-Barrel replaced with short section of an Enfield barrel
-Barrel shroud reworked to have 2 rows of 6 holes vice the 3 rows of 3 holes on a mk2
-Shortening the trigger housing cover and dimpling it so it "clicks" on like the later housings.
These are the major items, there were a few more minor items that had to be done as well. All in all I found these mkVs very time consuming, so I am not going to make anymore.