The Mod 1 has a forward assist the mod 2 doesn't have. But the mod 2 looks like it has a a better rail/upper interface that could be potentially stiffer.
I have a 16" CL barrel I would trade you for that barrel with cash. Especially if you gave me the barrel contour dimension fit what I'm hoping it will.
Page one, @sirhrmechanic named this guy ManBun. A fitting title for a man such as this with a Fix rifle. I think the mod's either change his name to ManBun or he's ban cat lunch.
Don't stop ignoring those flyers bro, keep on, keeping on.
The title says it all. Share your experience and knowledge.
Hoping for an action that takes shouldered prefits, comes in .223 and if it was a titanium body that would just top it off.