Mag Ext Rem 870 Express Magnum

[doh_312]

Anyone know of a magazine extention for the 12g Remington 870 Express Super Magnum? I bought one for sporting and I'm considering converting it to HD when I'm not headed to the field the next day. Any thoughts on this?

[Rmart30]

http://www.midwayusa.com/ ..........40ish or so for the 2 or 3 shot for a 870...
I bought a 2 shot choate extension for mine and its been great