BRO TUBE DIANA GRADE 28G IMP MOD
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•Longer choke taper inside Invector-Plus™ choke tubes for back-bored barrels •Stainless steel barstock is heat treated prior to machining •Titanium nitride surface 72HRC hardness for excellent wear and reduced plastic build-up •Absolutely perfect concentricity for superior patterning.•Extends beyond the barrel for easy removal and installation.•Browning Diana Grade choke tubes produce tighter patterns than Browning Invector-Plus™ choke tubes.