Geissele's 1-6:
https://firearmrack.com/geissele-sup...hot-show-2020/
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If you’re in the market and don’t mind an open box....... https://cameralandny.com/shop/brands...iation=1914953
Another optic that seems pretty affordable. No experience with it:
https://www.scopelist.com/Meopta-Opt...pe-653611.aspx
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