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May 8, 2024 - 6:28PM

Re: BSA M20 Reassembling a box of bits,

There should be a part number stamped inside the inner, possibly the outer too.

Rob

May 8, 2024 - 10:31PM

Re: BSA M20 Reassembling a box of bits,

Colin,

The part number on the inner is usually located at '2 o'clock' to the gearbox hole. Outer covers are a bit more bit and miss.