The Carlson's Choke Tubes Sporting Clays .410 Bore Browning Invector Short 1.5" Flush Choke Tube will most likely not fit a Tristar O/U 410. From what information I could find you will need a Benlli Mobil pattern 410 Choke Tube.
No it will not. The Tristar uses the Beretta Benelli Mobil choke system.
No. The Tri-Star 410 uses the Benelli Mobil choke system in the .410.
No. You will need the Benelli Mobil 410 chokes for the Tristar .410s