@Mrindecisive
I have been in discussion about this with a friend who works at Vortex.
The issue I see is the current AMG has a 6-24 with a factor of 4 for the erector. Meaning if they continued with that trend you're more likely to see a 3-12 or a 4-16. Whereas the Razor HD lineup is factored by 6... 3-18 and 4.5-27.
He wouldn't give me a firm yes or no on the light weight AMG, but there will be some more models coming out in their LHT lineup.
Please Select Reticle | 30mm Tube
vortexoptics.com
Not quite the 18x top end you're looking for, but their effort at making a lower powered optic with quality glass for not a lot of money. Exposed elevation turrets and capped windage turrets. 19.1 ounces to boot... My biggest complaint is the reticle options at this point and that it is SFP. Although, with it being 15x on the top end I'm not overly concerned with the ability to mil at lower mag. With all of that being said, I have one on the way. I'll certainly let you know how it performs if you care.