Just got a 1952 Ser# J401xx. Did these come from the factory with front swivel?. This one had a swivel in the bullseye and
one in the front of the magazine tube. I replaced the rear swivel with a bullseye and removed the front swivel. There is a
groove in the barrel and the magazine tube to accept the screw for the front swivel. I can't see Marlin milling a slot and not
putting a swivel in it.-----------------Thanks
