No, the Swampfox Hostile Engagement Sight Mount is designed to accommodate scopes with a 34mm maintube.
You would need to remove this mount and optic to use iron sights.
The Swampfox Hostile Engagement Sight Mount is the Gen 1 model.
Yes, the Swampfox Hostile Engagement Sight Mount 30mm model will work with the Athlon Argos BTR Gen 2 1-8x24.
Yes, the Swampfox Hostile Engagement Mount will work for a Vortex Razor Gen II. However, the specific mount you need depends on the model scope you are using as well as the gun you are mounting it to. Here is a guide that might help you pick the right mount.
https://www.opticsplanet.com/howto/how-to-how-to-measure-scope-height-scope-ring-height.html
Unfortunately the Sightmark M Spec will not be compatible with the Swampfox Hostile Engagement Mount. The mount is designed for optics that utilize The RMR footprint like the Holosun HS407C, Holosun HS507C, Trijicon SRO, and the Swampfox Kingslayer to name a few.
The centerline height is 1.60".
9.5 oz is the weight.
They should work just fine for you.
Yes, they will work just fine.