I made an account to say this.
Rail should be a Mk8. ~11.5” to 11.7”. With that key thingy at the top.
Charging handle should be Airborne, or whatever its called. The one thats not huge.
You’d have the only 12.5” on the market that doesn’t come with a stupid skinny rail.
Barrel should be chrome lined. Gas port should be meant for mixed suppressed use. Hodge 0.0625 works well on their carbine-gassed 12.5”. I don’t care if its button or CHF. Gas block should be pinned. Edit: I’d like a non-gov’t type profile of a similar weight to gov’t, but not a dealbreaker. Think Criterion Core, Noveske, Hodge, Ballistic Advantage Hanson, etc.
SSA-X trigger in the Form 4 complete rifle, but also offer just the upper. I’d also consider selling an un-keyed copy of the 11.5” Mk8 rail.
This is what it would take for me to finally buy a GA rifle.