I have gone through a lot of scopes, ffp,sfp, march, sb, zeiss,ior,leupold, and my favorite so far is a nx8 2.5-20 sfp, 2.5 for close shots and when I use my clip on, 20 for long range and target shooting, the glass in mine is every bit as good as any sb or zeiss I've had, it's short , somewhat...