Evident from the above posts is that the locks are thought as the part most likely to go wrong. But how about those other bits like safeties, triggers, firing pins, spindles and so on.
A bolted stock is the fastest and easiest way to gain access to all those other bits. Through the grip screws can be managed in the field and far off places, but are neither easy, nor safe to tackle without a vise and turnscrews.
So, if field serviceability is an issue the stock bolted stock seems to rank above the detachable lock.
Disc set strikers, with the tool to remove them, and a spare set of strikers, would eliminate the most problematic link in the above named chain of trouble.
My experience with English single triggers mirrors exactly my experience with Lucas electrics installed in older English cars and motorcycles.
Best,
Ted
