Ill contribute a bit
the Knoxx forearm is about the same length as the Maverick field forearm
obviously, they mount differently, the maverick tube is about an inch short.
for the business end, the grip is just about perfect to reach the safety.
just didn't look right with my paint job so the knoxx stock had to be painted too..
Feels solid when shooting.
i dont notice much (there is some) reduction when shooting bird shot, but when loaded up with a slug or buck shot or even 3", it helps out more and more. Im only chambered for 3" so I dont know if the stock is setup for 3-1/2" loads. It could probably go with softer springs for guns that are only chambered to 3".