winchester magazine tube extension help

[dakota port]

i have winchester 1300 turkey gun and it has the standard tube that can hold 4 shells, i want to buy an tube extension for it to hold more, which company makes the best magazine tube extension?

i found 2 a midway

http://www.midwayusa.com/product/94...2-gauge-2-round-matte-black?cm_vc=subv1582628

http://www.midwayusa.com/product/58...n-winchester-1200-1300-12-gauge-2-round-black

 

[dial1911]

I don't quite have the same setup, but I have a tacstar on a Rem 870 that works great. Although I did have to go back and smooth out the dimples on the mag tube a little more after the first time I installed it.