Add a PDW stock to a G&G 416

[Krank]

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I'm after adding a pdw stock to my g&g 418, the first picture is the gun I have and the 2nd picture is what I'd like my gun to look like once I have put the new stock on. Does anyone have a link to a pdw stock I can buy & also would I need a new buffer tube or anything? 

Found this on eBay would this fit fine? 

https://www.ebay.co.uk/itm/Collapsable-HK-Crossed-Stock-Stinger-for-Marui-G-P-VFC-airsoft-M4-16-416C-AEG/292637625510?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

Thanks