This tube fits the following guns:
Browning 12ga 525/625 Citori
Browning 12ga BPS
Browning 12ga BT-99 
Browning 12ga Cynergy
Browning 12ga Gold
Browning 12ga Maxus
Browning 12ga Silver
Ithaca 12ga Model 37 Plus
Marocchi 12ga Golden Snipe Field O/U
Sako/Tikka 12ga 
Winchester 12ga Model 101
Winchester 12ga Select 
Winchester 12ga Super X2
Winchester 12ga Super X2, Super X3
Winchester 12ga Super X4, SX4
Winchester 12ga Supreme
Winchester 12ga SXP
 
12ga Browning Invector Plus/Winchester SX3, SX4 Code Black Duck
 
The Code Black Duck is arguably the worlds most versatile tube. Imagine a single tube that will get it done in everything from the Arkansas timber, Eastern Shore Geese, all the way Georgia Dove Field and still hold it’s own on a Missouri Longbeard.
The Code Black Duck’s versatility is not only in it’s patented design, but in it’s construction. Our patented stud ring design shortens the shot string immensely...so when you hit your quarry you hit em with the entire load. Expect a tighter pattern similar to a “full”. Effective distances vary from load and pellet size...but experienced hands should expect clean kills at distances most would consider lucky.
Crafted from titanium infused 17-4 aircraft quality stainless-steel you should see a lifetime of serious usage. If you’re like most of us and are looking for simple but effective the Code Black Duck is the tube for you.
* Ballistic Specialities suggests ammunition below 1550FPS for best results