The Rob Roberts RR2 Raptor Invector Plus 12 Gauge choke is expertly crafted for midrange shooting ideal for duck and dove hunting. Engineered from durable 17-4 PH stainless steel it offers superior pattern density through advanced internal cuts. With a focus on innovation and years of development this choke ensures optimal performance. Please note it is designed for use in only one barrel of an over/under shotgun.