Free: Contests & Raffles.
Copy that; figured the rear would have to come off. Do you remember if you used low rings on your setup Woodchuck?
I ran both setups. The standard rail IMO was waaaaaay better. More comfortable, quicker to target, less clunky, looked better and more secure. I think the old see through rails are from a time when optics were far less dependable than todays stuff.