No. 4 Lee-Enfield rear sight replacement tools

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albertacowboy

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Thanks to a fellow CGN member, I was able to buy a mint NOS No. 1 LB rear sight for my mint 95L 1950 No. 4. I am going to change out the C No. 3 SAL rear sight ( retaining it, of course) for the No. 1 sight. I want to be ultra-careful and not mar the 95L, so any advice about the procedure will be welcome. I am planning on using brass Wheeler punches to remove and reinstall the two retaining pins in question, and I have a proper gunsmith's hammer and CF armourer's guide.

Many thanks,
Albertacowboy
 
If you absolutely want to avoid marring anything, use a heat gun (not a torch ) to lightly warm the lock pin in case it has a touch of rust or hardened oil from never being removed before. Give the big slotted pin a rap on the screwhead end (but it's not a screw!!) with a plastic headed hammer. Then try the small lockpin. Usually it will come out easily, tapping from below, but a brass drift may leave a golden mark on the finish. I'd try a piece of hardwood dowel first or hard plastic before going to the brass drift. Once the lockpin is out, the pivot pin usually slides right out, but push down on the sight slightly to take up the spring pressure that is pushing it upward. Avoid putting a screwdriver into the screwhead until reassembly- you may need to turn it slightly so the lockpin lines up. I find the brass hammers and drifts can leave a golden shine on the parts that you may not like. Best of luck.
 
albertacowboy said:
Thanks to a fellow CGN member, I was able to buy a mint NOS No. 1 LB rear sight for my mint 95L 1950 No. 4. I am going to change out the C No. 3 SAL rear sight ( retaining it, of course) for the No. 1 sight. I want to be ultra-careful and not mar the 95L, so any advice about the procedure will be welcome. I am planning on using brass Wheeler punches to remove and reinstall the two retaining pins in question, and I have a proper gunsmith's hammer and CF armourer's guide.

Many thanks,
Albertacowboy
Click to expand...

It's literally a job of 5 or so minutes.

Unless...you have one of the hellish lock pins that jams...they're rare but they happen.

I have a very fine pin punch that I tap up on the pin with. First of all, you should remove the safety assembly(1 screw, make note of how it came off) so that you can get the best angle on the pin.

Push hard down on the sight when trying to get the cross pin back into the hole...it's a bit tough fighting the spring pressure but very doable if you have strong fingers.
Touch of oil on all moving parts before reinstalling.
 
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