Those who are looking for the Tanaka M870 Airsoft Shotgun can find an alternative in the form of the PPS M870 Gas Powered Airsoft Shotgun as it's basically a clone of the Tanaka version making it compatible with the Tanaka Gas Shells. You can order one from WGC Shop for US$233.00 but better hurry, it's a hot item... "This PPS 870 Package Includes: Gun, Shell x2, Gas charging tool, Sling, Snap Hook x2:

I should say this 870 is in Tanaka 870 system so the shells are very similar to each other.

There is a tricky way to charging the shell by placing the shell upside down on a rack during charging it.

Already mentioned before the shells of PPS and Tanaka are look very much alike except the colour.

But have a closer look: you can see the thickness of the shell wall. The PPS is thicker than Tanaka, so PPS shell wall should have more protection of the gas cylinder during the impact.

You can also check the PPS 870's realistic assembly design.

Come and get a real pump action shell-ejecting airsoft 870 then."