no
You can.
No, they are not. I bought a Speck Ops folding stock for the Winchester 1200/1300 series of shotguns, for my Winchester SXP Defender. Upon trying to install the stock, it was obviously much different than the old 1200/1300 series. ATI mentions a stock system with Winchester adapter for the 1300 and the SXP series, try calling them to see if you can buy just the adapter or the stock system, if that is what you are looking for.
Any barrel will fit only if you replace the tube also to a conventional 1300 tube.
No
Best left to a gunsmith
Have it drilled and tapped by a good gunsmith.
2 3/4" or 3" shells only
between 200-270 dollars.
5/16"-24 x 6 1/2"
NoThis is from the Winchester Website: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 viceversa.
Yes; however, the Remington Coppersolid slug is designed for shotguns with fully rifled barrels. A rifled barrel is not standard on the 1300 Defender but is available as a replacement. The Coppersolid slug can be fired from a 1300 with a standard smooth bore barrel, but long range accuracy will suffer.