The tensioning method that is employed to retain it in the chamber is a nylon "button" that is implanted into the side of the chamber. Weights 7.3 ounces
Attention Benelli 828U Owners: these will not extract shells.
DT11 Due to the long forcing cones and tri-bore of the DT11 Optima HP barrel, we are no longer making/offering Drop In tubes set for the DT11 in 20ga. 20ga tubes for a DT11 MUST be fitted.