You are not dumb there is no guide as to how it all works, most on here have faced a similar issue at some time, just how does it all work?Originally Posted by Awake514 Go to original post
You can buy the level 30 one if it is available from the vendor, popular weapons are rarely available to buy, you just need to keep searching the blue print vendor and asking on the forum if it is available. But once you have a blue print it is shared across your characters, so future agents can make and use an M4 when they get to level 30 or like the one you already have level 17.
To see if you can purchase one the site Rubilmania ? google search for it, it has a website that lists all stock available from all vendors, covering weapons, armour, weapon mods, armour mods and spec mods, it lists the specs, cost, currency and who has it. Popular weapons such as the M4 are not for sale all that often and some that are do not have top specs.
Cheers and good luck in the game.