G&G TGM Q5 SD6 Fixed Stock MP5

[SgtTalbert]

I've just purchased the G&G Q5 which is the fixed stock variant. However, I want to put the sliding stock on it as:

1) I'ts more iconic

2) More functional for the type of airsoft I play

Unfortunately the Q6 (sliding stock) is seemingly out of stock anywhere as I purchased the Q5 for £254 delivered (new) so couldn't turn it down.

Question...

As the G&G sliding stock is out of stock, does anyone know (I have tried to Google) any 3rd party retractable stocks that would fit? CA? CYMA? JG?

Annoyingly the G&G would be a 5min job of unscrew fixed, screw on sliding

Thanks in advance...