There are schematics of the model 640, and the 43 on the Numrich web site showing the configuration of the parts.
640 S&W Accessories | Numrich Gun Parts
43 S&W Accessories | Numrich Gun Parts
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Ret. LE, FA Instr, S&W Armorer
Last edited by armorer951; 02-04-2017 at 10:40 AM.
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