Steel, dual function wrench lets you easily remove your old
extension tube and install a new-style, A4 stock. Spanner has
three lugs to fit the A4-style castle nut. Provides a non-slip fit so
you can correctly torque the stock to the receiver. Also, the
comfortable, rubber coated handle features a cutout to fit the
receiver extension tube to remove the A1 or A2 stock.
SPECS: Steel, parkerized finish. 7-5/8" (19.3cm) long.
Catalog page 71