Rifle Scopes USO sn-12r or sn-4s on m1a?

1911guy

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Full Member
Minuteman
Jul 25, 2008
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San Diego
USO sn-12r or sn-4s on m1a?

Anybody have any experience with either of these scopes on a m1a with a smith mount and smith low rings?

specifically:
1. Eye relief- Normal or Extended?

2. Eye piece, in a low smith ring, will it clear the rear sight?

3 Can't tell from website, does the sn-12 with the integral mount sit higher then the sn-12r in a low smith mount?