For the KV on the picture the top rail is a B&T

:
http://www.bt-ag.ch/en/manufacturing...ts.php?pid=503
I'll go for this one myself :
http://www.bt-ag.ch/en/manufacturing...ts.php?pid=506
If I can find one I'll make a small torture test with a STAR or CA AG36.
For the stock however I will change it : it's AEG dimensions so RS stocks are sadly no go and the G&P G36 retactable stock (which I had on a STAR Gen2 G36) is probably not sturdy enough to take the recoil consistently. It will probably not rupture but it will get deformed...
If I remember correctly you get some from Wolverine Supplies, these parts are not restricted
PS : for the RS stuff let's keep it on the PM just to keep the review more or less "clean", thanks.
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Tous les jours nous nous endormons plus instruits mais pas forcément moins bêtes...
I can do a CTRL+ATL+DEL on your gun !
Gun doc in Montreal on AEG, GBB, GBBR and Bolt rifle (gaz and spring)
Heavy custom builder (including painting)