FCW carbon fiber mag extension for the Tristar Viper/Cobra II 12ga shotgun. Comes with our SS extreme duty spring and wrench.
The FCW aluminum support clamp is recommended for use with an extension of +4 or more.
+2 adds 3 rounds of 2-3/4" shells. Adds approx. 5 3/4" in length and 2.65 oz in weight.
+3 adds 3 rounds of 2-3/4" shells. Adds approx. 8" in length and 3.25 oz in weight.
+4 adds 3 rounds of 2-3/4" shells. Adds approx. 10 1/4" in length and 3.70 oz in weight.
+5 adds 3 rounds of 2-3/4" shells. Adds approx. 12" in length and 4.10 oz in weight.
+6 adds 3 rounds of 2-3/4" shells. Adds approx. 14 1/2" in length and 4.5 oz in weight.
+7 adds 3 rounds of 2-3/4" shells. Adds approx. 16 3/4" in length and 4.95 oz in weight.
+8 adds 3 rounds of 2-3/4" shells. Adds approx. 19 1/4" in length and 5.45 oz in weight.
+9 adds 3 rounds of 2-3/4" shells. Adds approx. 21 1/4" in length and 5.80 oz in weight.
DISCLAIMER: In some states, the same regulations that apply to capacity limits on detachable rifle and pistol magazines may also apply to shotgun magazine tubes. It is the customer's responsibility to research the laws and regulations in their state and community prior to purchasing an extended magazine tube.
