if only there was a way to x ray under the stock ferrule to see if the barrel was notched for a top pin for a spike ferrule originally. I doubt either of us will knock it off to see.
I am very glad to see the pinned magazine....mine is as good as it's gonna get, and I have one less unicorn to hunt.
If you happen to have a micrometer, the length and diameter of the latch pin's pin would be a great piece of data for a guy like me. I keep hoping mine will just fall out of the trigger group or the recoil spring....so far, no dice.