I could tell based on just the photo of the frame that it was not a 20g or even a small frame 16. The proportions of the frame have 2 frame 12 written all over it.

And your measurement of 1-1/8" verifies it is a 2 frame.

A set of 2 frame 12g barrels is about the most commonly encountered set of Parker barrels you could ask for. Fitting them correctly is another story. Each gun was hand fitted and there is a lot of variation from gun to gun.

Even being a grade 3, putting this gun back together from what you have would be a labor of love.


FYI, the stock and forend in the photos are not from a D grade gun, so they cannot be original to the frame you have. So, you are missing more than you think.

B.Dudley