Titanium nitride for durability and hardness. Optimal patterns for shotguns designated for 20 gauge Invector Plus. These tubes are a match for the famous Browning "Diana" name. A complete selection from Skeet to Full.

The Gold Standard for choke tubes. The longer choke taper inside Diana Grade Invector-Plus choke tubes improves pattern performance. These tubes are for use with back-bored barrels on 20 gauge shotguns. They offer a superior construction from stainless steel bar stock that is heat treated prior to machining. The use of a titanium nitride surface with 72HRC hardness provides excellent wear and reduced plastic buildup, and they look beautiful on the muzzle end of your Browning Citori.

Features:

• Longer choke taper inside Invector-Plus choke tubes for use with back-bored barrels on 20 gauge shotguns.
• Stainless steel barstock is heat treated prior to machining.
• Titanium nitride surface 72HRC hardness for excellent wear and reduced plastic buildup.
• Absolutely perfect concentricity for superior patterning.
• Extends beyond the barrel for easy removal and installation.

Specifications:

Note:  Invector-Plus choke tubes fit only Browning shotguns designed for Invector-Plus and are NOT for use in shotguns showing Standard Invector or Invector-DS on the barrel(s).