If I am not mistaken, I believe the scopes are made by Sightron. Or, at least they are made by the same people who manufacture the Sightron line of scopes. I own four of the Alaskan Guide scopes, and a few Sightrons, and they have quite a few things in common. For one, the power ring adjustment on the Alaskan Guide scopes is virtually identical to the ring selector on the SII Big Sky's. Also, the windage and elevation turrets on my SII are identical to the ones used certain models of the Alaskan Guide scopes. My 6.5-20x Cabelas scope uses the same turret adjustments as my fixed 6x42HBR SII and my SII 4-16x, and all three have 1/8" click adjustments. All are marked "Made in Japan", and both brands share similar power/objective combinations. One more thing I have noticed, both the Sightron and the Alaskan Guide scopes use the exact same "Nitrogen Gas Port" sticker, and it is mounted in the same exact location on both lines of scopes (on the bottom of the elevation/windage turret housing).
Now, I am basing this all on the previous line of Alaskan Guide scopes. The newer XT and Premium series I cannot comment on, as I have not had one of these scopes in my possession. But if I was a betting man, I would wager that the Alaskan Guide scopes I own were made by the same people who make Sightron scopes. And I would also wager its safe to say they use the same glass, especially considering all the other components are virtually the same.
I can tell you this, the Alaskan Guide scopes I own are optically fantastic. I have shot mine on the becn against quite a few other brands, including Burris FFII's, Nikon Monarchs/Buckmasters, Sightrons, and Leupold VXIII's, and they are just as bright and clear.
