I guess I'd be smart to pick up a few of the most likely parts to fail, firing pins, extractors, etc. Mine is a 500 with choke tubes, definitely not a safe queen![]()
I've had my 20 ga. for more than 20 years using it for Skeet and Grouse hunting with no problems, I'm not too concerned on having spare parts. However From what I have read over the years is the hammer springs are the most likely to fail if anything.
If you have a "500" with choke tubes, they have been added to the gun. Factory installed tube were introduced with the 505, 605 etc.
Very good quality Japanese made guns no longer in production. I have owned and reccomended to others 500 and 600's and still use a 20 ga. 600. Chrome lined barrels, low profile receivers. Model numbers ending in 05 or 85 had choke tubes. parts are still available in Canada and the US.
The SKB name has been bought and new guns produced in Turkey have nothing in common with the Japanese produced guns.
The receiver is based on the Merkel. The Japanese really knew how to mass produce quality copies (throwing in a few of their own variations) of good guns.
I double checked last night, definitely a 500 with what looks like factory screw chokes. Would the barrels have been flared in a gun that originally had fixed chokes?
Many manufacturers swaged/flared the last few inches to accomodate choke tubes as did some early aftermarket installations before thin wall tubes became available. The aftermarket tubes needing swaging of the barrel would not be applicable to doubles as it would mean seperating the barrels, ribs etc and re-soldering it all together again.
That leads me to believe your choke tubes are factory installed to the barrels.
Does the serial numbers On the barrel set match the receiver and fore-end iron ?
Possibly a transition gun before the 505 ?
What is marked on the gun, ie; SKB made for Ithica, Mitsoui (?) or just SKB ?
All serial numbers match, and the barrel set is marked "Model 500- Made by New SKB Arms, Japan"
Receiver is silver colored with minimal engraving. I'll try to get a couple pictures over the next few days, I'm starting to wonder just what it is that I have, if it's something unusual or not.



























