Threads on Lee Enfield aperture rear sights

[Peter Laidler]

The matter of screw threads used by Parkers, Parker Hale and all of the others is a total enigma and has been featured on this forum since time began. I personally believe that they did this so as to make their sights totally unmanageable, unfathomable or repairable by the average simple bloke like me armed only with a simple 3 (or 5) year apprenticeship and a degree in engineering. Their screw thread system doesn't seem to equate to those found in the usual engineers reference books or....., anywhere really outside the factory drawing office.

My sons old school Cadet Force had a stack of the sights together with a letter refusing to sell them spare parts or screws but suggesting that the sights be returned to the factory for refurbishment as some considerable cost. A nightmare

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