The Maverick line of shotguns are assembled in Eagle Pass, Texas using some foreign (Non-USA) manufactured parts, mainly from Mexico; which contributes to their relatively lower price in comparison to the Mossberg 500 series of shotguns which is assembled and manufactured in the USA.
The trigger groups will not interchange between Maverick 88 and Mossberg 500 guns, but the majority of other parts including barrels, stocks, and shell magazines will (the barrel and magazines must be the same length).
Maverick 88 shotguns feature a trigger guard mounted cross-bolt safety as opposed to a top tang safety, which is used on the Mossberg 500 series.
Early Model 88's were equipped with a single slide rail, but this was updated to a dual slide rail in 1990.
Maverick 88's are factory finished with steel bluing only, whereas Mossberg 500's have factory blued, stainless steel or parkerized (receiver/barrel/magazine) options.