Lifter actions and trips

[B. Dudley]

Question on lifter actions. On my S/N 4216 (Pree recessed pin and check hook design), the lifter and bolting mechanism is not held open when the gun is opened. Is there a Trip on these very early guns, or is mine just missing? I have not had the chance to look and see if there is a place for one to be. The gun was in parts when I got it, so I would not be surprised if it went lost.

I see in looking at Parkers original description of the lifter action operation, the illustration and description shows the presence of a trip. But I see that the design shown is the later lifter action that has the catch hook on the barrels. My 4216 is earlier than that.