These Frontier 34mm are really nice scopes, I saw them on the show, I would love to try their 3-18×50 on my CZ457....maybe Hawke can help making this happen :)....I am curious to compare with a vortex pst, razor gen II and IOR Valdada....First impression on the show was good....158 MoA is a good elevation range for a rimfire....definitely very interesting...