LCT LCKM-63 Scope mount or rail mount?

[oDevvoHD]

So I just bought an LCT LCKM-63 and want to be able to mount a red or holographic etc but I am struggling to find and information on any mounts or rails available, LCT do sell a Railed rust cover which is compatible but it's £60 and that's abit much so was wondering if there is any alternatives? thanks

http://www.bespokeairsoft.co.uk/_shop/primary-assault/lct-lckm63-hungarian/