should check out gunweek.com , they have an article on the fn tactical pump shotgun
FN’s Tactical Police Shotgun Rated Tops for Defense
Photos & Story
by R.K. Campbell
Contributing Editor
"The safety of the FN Herstal TPS is a cross-bolt which lies just in front of the trigger guard. It is quick enough in use, and one of the few departures from the AR15 format. The slide/bolt release will be familiar to anyone who has used the various Winchester pump-action shotguns. Learning the position of the release and its rapid manipulation is vital, as most combat shotguns are kept ready chamber empty, but against a cocked spring."
"The action of the TPS will be recognized by many as the proven Winchester 1300, with refinement."
"As of this writing, the TPS is the top combat shotgun in mass production in the United States, per my testing. There is simply nothing else in its league. Anyone wishing to own a top-quality defensive shotgun should take a hard look at this one. You will not be disappointed."
Seems to me that the FN is a copy of the 1300,interesting that they didn't use the famed 870 as a platform