No4 Mk2 Irish Contract

[Patrick Chadwick]

Do you mean that
a) there is a hole, but no screw?
In which case you need (I think) a 4BA screw of appropriate length, and you seem to be living in the wrong time zone to find one easily, let alone cheaply?

or
b) there is no hole?
According to Stratton, the screwless version was used primarily on wartime Savage and Long Branch Mk 1s. One would certainly not expect it on a very late No. 4 Mk 2. In which case, quite apart from the possibility of relacing what you have by the proper foresight block assembly, it would be advisable to look over the entire rifle very carefully for other anamolies. Maybe someone has been creative with spares at some time?

To replace: remove the foresight protector screw. The foresight protector is the "ears". Then slide off the foresight protector.
The foresight block band is held on by a 0.1" diameter pin that you will have to drive out (I think from left to right - someone please correct me if I am wrong!) You can then slide off the foresight block. Ha! Ha! Some hope! - You will probably have to "persuade" it with a piece of hard wood and a sharp tap on the wood with a plastic hammer. Not that it will be rusted - it's just that after half a century any grease has long since turned into a kind of resin! So soak the whole foresight assembly with penetrating oil and leave overnight before you start the job.