I'm starting to get my parts lists started on the 2 lowers I got in the group buy. My current AR is wearing an 16" bbl and an EoTech. I'm thinking about a low power scope for one of them. It's not going to be for comps or anything in general. Just another gun for me and my family to shoot and have fun with. So what scope do you recommend in the 1-4 power range? The other one I'm thinking of doing a 18" heavy barrel 6.5 Grendel. Thoughts?