Newbold's Knock-Down KnockDown Bowling Pin Reactive Target and the Pivot Base it mounts on are each sold separately. When mounted on the Pivot Base and hit, this KD Pivot Bowling Pin Target reacts and falls over backwards. It stays down until you reset it manually or by pulling on a string. Bullets pass through the KD Bowling Pin target and the Pivot Base because they are both made of Throom?, NewBold's tough, flexible, Self-Healing polymer.
To mount a KD target on its Pivot Base, you simply snap it into place. Then secure the Pivot Base to your soft wood target stand with (4) wood screws or with (2) Throom? Nuts & Bolts.