help please lads

right lads i,ve got into the larger guns now for the fox,s and roe deer but at the mo it,s mainly for the fox,s .now i have picked the ruger m77 mk11 in .223 and the problem i have is fitting my nv unit to it , .we all know that the ruger has it,s own mounting system and what a bugger it,s been .i got one set off rings with the rifle and don,t realy want to start chopping them up so what i,m looking for lads is a rail systen to fit the ruger .u can,t realy get them here in scotland so lads can u help me put and tell me whats there is . thanks for your help . atb steven