This tube fits the following guns:
Benelli 12ga 828U
Benelli 12ga Cordoba (2011 to current production)
Benelli 12ga ETHOS 
Benelli 12ga Legacy
Benelli 12ga M2/M2 Tactical
Benelli 12ga Montefeltro (2011 to current production)
Benelli 12ga Sport (2011 to current production)
Benelli 12ga Sport II (2011 to current production)
Benelli 12ga Super Black Eagle 3
Benelli 12ga Super Black Eagle II 
Benelli 12ga Super Sport (2011 to Current production)
Benelli 12ga Super Vinci
Benelli 12ga Ultra Light
Benelli 12ga Vinci
Beretta 12ga 686 White Onyx Sporting
Beretta 12ga 687 EELL Diamond Pigeon Sporting
Beretta 12ga A391 Xtrema2 (Synthetic, MAX-4, AP)
Beretta 12ga A391 Xtrema2 KO (Synthetic, MAX-4, AP)
Beretta 12ga AL391 Teknys Gold
Beretta 12ga AL391 Teknys Gold King Ranch
Beretta 12ga AL391 Urika 2 AP, Synthetic, MAX-4
Beretta 12ga AL391 Urika 2 KO (Synthetic, MAX-4, AP)
Beretta 12ga AL391 Urika 2 X-TRA Grain
Breda 12ga Grizzly
Breda 12ga I930
Franchi 12ga I-12 Sporting (Current Production)
TriStar 12ga TSA Mag 3.5 inch chamber (no longer in production)
 
12ga Benelli Crio/Beretta Optima Plus Anaconda Striker 0.670
 
Patternmaster Anaconda “STRIKER” (0.670”) has “Gas over Constriction Technology” within the patented “Coil Zone” made up of internal channels used to harness gas expelled from the ammunition. “Coil Zone” channels are spun in a negative twist to stabilize the wad for even, consistent patterns and keep the tube tight in the barrel. Anaconda “STRIKER” will throw an Extra Full pattern with distances out to 60 yards. This tube is safe and effective with non-toxic shot as well as lead. 
Note: Testing done by Ballistics Performance has determined that ammunition with velocity of 1550fps and below will achieve the best results with Patternmaster Tubes.
Not for use with slug ammunition.
NOT FOR USE WITH STEEL SHOT
Patternmaster’s 12ga Benelli Crio/Beretta Optima Plus will interchange with Benelli Super Black Eagle II, M2, Ultra Light, and Current Benelli Production Sport II, Super Sport, Cordoba, and Montefeltro; Beretta A391 Extrema II, Vinci, and Super Vinci; and Tri Star 3 ½ (current production); just to name a few. For more information about your shotgun interchange please see the firearm owner’s manual or contact the firearm manufacturer.