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Pardoning my ignorance and lack of literature on the topic, but were the Lithgow made L1A1's imperial or metric? I've got a line on a reinforced top cover fitted with either rings or a rail, but it is imperial. Will it fit? Which would be better- rings or rail? More options with a rail I suppose but would it be getting too high over bore?
Opinions, please :sos:
They are imperial system and should interchange with British and Canadian parts.
If I was you Son, I'd start by bridging the top cover in a manner used by the SUIT and IIW night sight and old No74 sight method. It is a stronger method of mounting a rail or rings. Have a look at one of these methods then take it from there.
Can onyone post a pic of just such a top cover to illustrate the point? If you need a few to practice on, then let me know but don't spoil your original
I've purchased from this bloke and he's pretty good.
http://suitsight.com/index.html