Has anyone used this on a No 4 or No 5? With the #4 & #5 so cheap I'm considering buying one just for the heck of it and to use the mount.
I have an Ishapore, why exactly will this thing not fit on it - left side of receiver on #4 & #5 is flat, Ishy is not? Safety looks the same, each uses the screw through the receiver wall as an ejector.
I have an Ishapore, why exactly will this thing not fit on it - left side of receiver on #4 & #5 is flat, Ishy is not? Safety looks the same, each uses the screw through the receiver wall as an ejector.

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