It is equally as easy to get south of $600, without trying very hard
I agree. You can even buy an off-the-shelf rifle for under $400 currently.
But…
The top gun has an Aero upper/lower, many Aero internals, POF trigger, Adams Arms mid piston system, Voodoo pencil 14.5 barrel, Wilson flash hider, Magpul grip and sights, MFT stock, Vortex optic, Ranier handguard and many other goodies.
The bottom one has Aero’s 7075 matched upper and lower, slim handguard, 18” fluted Wilde barrel, bolt, carrier, DI rifle gas system with adjustable gas block, buffer and tube. The rest of the goodies are POF trigger, Magpul MIAD grip and UBR stock ( a beast), B.A.D. Controls, KNS pins, PA optic, VooDoo muzzle break, and other goodies.
More $ than sense- maybe. But boy, do they shoot great and run flawlessly. And look cool
