MDT LOP Spacer Stock Spacers Black. 5in to 1.0in of length of pull to your Stalker CORE Buttstock. Each spacer adds a half inch so you can stack one or two to dial in the distance from trigger to buttpad and find your natural cheek weld and stance. Specifications for MDT LOP Spacer Stock Spacers: Manufacturer: MDT Color: Black Stock/Brace Material: Nylon Fabric/Material: Nylon Weight: 2.05 oz Package Contents: MDT LOP Spacer Stock Spacers MDT 116623-BLK: LOP Spacer Stock Spacers Black