Compresses the mainspring until the cross pin can be driven out.
Screw is recessed and shouldered to protect firing pin tip.
SPECS: 5½" (14.0cm) long. ¾" (19.0mm) wide.
1¾" (4.4cm) high. Weighs 10 oz. (28.3g). Aluminum base,
steel screw.
Catalog page 469, 471