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I think they are weaver rings, he threw the box away. Sorry I can't say exactly.

I'm going out with him on Wednesday evening so I'll get back to you once I take a look

Another thing I can say about the A 7 is that it is heavier than the Tikka but feels so much more robust and solid, probably like comparing the last of the Jap built hilux's to the lightly built crap...

My son bought a A7 recently in 7mm Rem Mag and although we have only sighted it in at the range we haven't noticed any issues at all. Early days but seems to shoot well.