After a year and a half of fooling with the sights, acquiring a new center-bedded stock (the one it came with was gorgeous, but a std. No4 stock someone had put on it) and locating all the small bits, here's my Longbranch No4 DCRA conversion in .308.
Here's a closeup of the AJ Parker rear sight:
Here's the welded reinforcement plate under the mag well (used to stiffen the receiver, as these were single-shot only rifles):
This is the sight picture with the AJ Parker sights:
I haven't shot it with the new stock, but I'm hoping it lives up to its potential...it should be a tackdriver. I've got dies and match .308 bullets ready once the stock settles in.
If you don't know the history of these interesting rifles, here's a page that describes their origins:
enfields.freestarthost.com/ri15.htm