Originally Posted by Whttail_in_MT
This says all-new erector tube system.

It's a new erector system compared to the previous S1's.

Originally Posted by Overkill45
Dear Sightron, bring back the hunting oriented SIIIs you stopped making and/or the most popular offerings in the SII Blue Sky line. The SIIB 3-9x42 is the best 3-9 i have ever owned by far.

I think you're referring to the Big Sky SII's. The Blue Sky series is one of Sightron's binocular series. I have a fair number of the Big Sky scopes.... smile

[Linked Image from i.imgur.com]

Good shootin' smile -Al

Forbidden Zoner