Looks like a Crosshair to me. A side view of the ear stems would help, also if there's a sku on the inside of the arm post that
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That link is for 2012 Crosshair Lenses. They are NOT Compatable with the First Gen Crosshair.Rustpot is right...first gen Crosshair. NOT the small judging from the curvature of the orbitals.
Oakley Crosshair Replacement Lenses | Official Oakley Store
Crosshair 2.0? I think.