The 783 is basically a Marlin XL7.
The 783 and the XL7 share the same trigger and thats about it from my understanding anyways....the XL7 has a completely different action, its an open top action where as the 783 has an ejection port cut into the action similar to the 788's of past, reportedly making it stiffer. The 783 also has a heavier contour barrel making the rifle heavier but also aids in accuracy as the barrel heats up. I'm not sure if the stocks are of the same polymer giving the extra stiffness that the 783 has.
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