Hi Matt,
First, I second skeettx's remark on your service! Thank you!!
Second, I too welcome you to the board!
Third, you have purchased a very well made gun(!) & you will likely find any hard information is just that .. hard to come by.
To the best of my knowledge all 'My Lucks' have chopper lump barrels and were very well fitted. What are the specifics on your gun, i.e., bbl. length, chokes, trigger(s), ejector or extractor, pistol grip, splinter forearm or semi beavertail, &c?
From what I can tell, all 'My Lucks', model "M's", model 52's [Roman numeral model designation] and some model 500's are essentially the same guns w/some variation on the stocks & forearms. I too would like to find a definitive history of these guns and when they went from chopper lump bbls. to monoblocs. I've friends in Japan, citizens, who have drawn the same blank about that information, but never say never. Should you be so fortunate as to get some solid information there, I'd hope you will share it w/the rest of us.
Meantime,
Good shooting!
