Building up a m1a on sage platform.Specs are 18" med heavy barrel, 1 and 10 twist, chambered in m118.Not to worried about a fixed parallex as rifle will have buis. this is going to be my shtf rifle, looking for a bullet proof optic for 500yds and under.Actually having 2 rifles built one in 18" and the other one in 22". Was looking at the sn3 for the 22" gun.I have an S&b 5-25x56 great optic but the thing is a tank. For the 22" m1a in sage platform have also considere the S&B 10x42 fixed. Currently my 5-25x56 sets on my pof 308. I know its over kill and does look quiet humorous but one day hope to have it setting on an AIAW 338. The M1a is not a scope friendly platform and looking for something that is not over bearing for the rifles.