Bg Diana Grade 12Ga. Inv Plus Extended Choke Tube Imp. Mod. 1130563

FEATURES-12 gauge-Improved Modified-Stainless steel with titanium nitride finish-Longer choke taper inside Invector-Plus choke tubes for use with back-bored barrels-Stainless steel barstock is heat treated prior to machining-Titanium nitride surface 72HRC hardness for excellent wear & reduced plastic buildup-Absolutely perfect concentricity for superior patterning-Extends beyond the barrel for easy removal and installation