Choate Tool H&R Tamer Buttstock Model 410 Gauge. They will aid in speeding up your followup shots with your single shot shotgun by placing extra shells into easier reach. Specifications for Choate Tool H&R Tamer Buttstock Model: Manufacturer: Choate Tool Country of Origin: USA Features of Choate Tool H&R Tamer Buttstock Model H&R Tamer Buttstock 12 Gauge Model (holds 3 shells) Package Contents: Choate Tool H&R Tamer Buttstock Model Choate Tool CMT-19-01-12: H&R Tamer Buttstock Model 410 Gauge