Hello!
Welcome to the forum!
Sorry, I'm not familiar with the Firstline program, never used it. I ordered my Echelon 4.5F Comp on Feb. 3 (from grabagun.com) and it was delivered to my local FFL on Feb. 12. I know some dealers/distributors have the items on the shelf for immediate delivery and others have to order them from the factory. One of my LGS and my range/FFL are Firstline dealers but neither had that item in stock. I would imagine waiting for one to ship from the factory could take a few weeks, but don't quote me on that. My first SA XD9 took months to get to the dealer after I ordered it. But that was during all the covid crap, and when I was living in CA. Be patient and good luck! I'm sure you'll love your Echelon.
I'm wondering how long I'll have to wait for delivery of the "Gear Up" promotional items, three magazines and a red dot, free when you buy an Echelon or HellCat for a limited time. I guess I'll have to be patient too.
Thank you for your indulgence,
BassCliff