So i built my first AR 15 using an Les Baer varmint upper and a Lrb arms lower. I'm very happy with the lower but man i had to do a ton of grinding on the upper to get it to sit right. Is this a normal problem with the Les Bear uppers and do i have anything to worry about. So now I'm looking for some recommendations on a decent scope sub 200 to start. This rifle will be for targets up to 200 yards since there are not many places around that go further then that, and some varmint. If you guys have any other suggestions let me know.