How versatile are the Model 1300 barrels? Will they fit earlier or different models?

How versatile are the Model 1300 barrels? Will they fit earlier or different models?


The Model 1300 barrels will fit Model 1200 receivers, but 1200 barrels will not fit a Model 1300. Model 1400 barrels will not interchange with Models 1200 or 1300 barrels.

The Model 1300 Defender barrels will not interchange with the 1300 Field models and vice versa.