The next Call of Duty: Black Ops 7 is leaning more into a futuristic vibe, but what players are really buzzing about is a fresh tweak to multiplayer that cuts out one of the most annoying headaches. If you have ever been melted by a teammate’s gun and asked for their setup, you know the drill—they have to list grip after stock after muzzle while you try to build it from scratch. It is slow, clumsy, and pulls you out of the match. Now, with the new Weapon Build Sharing system, you can skip all that. Just grab or send a CoD BO7 Bot Lobby build code, and the game handles the rest. No more scribbling down attachments mid-game.

Here is how it works. You fine-tune your weapon in the Gunsmith like normal, stacking the attachments you want. Then, with a quick option in the menu, you get a short alphanumeric code tied to that exact build. That code is all you need to pass on your setup to a friend, the squad, or even post online for other players to try. It is quick, it is clean, and it means your mates can be running the same loadout in seconds, not minutes. In competitive matches that demand tight coordination, it is a lifesaver.

Importing is even easier. You take the code you have been given, drop it into the upload field, and the game instantly recreates the weapon exactly as it was built—attachments lined up, optic in place, everything ready to go. You do not need to poke through endless menus or guess which foregrip someone was using. From a streamer’s meta rifle to a buddy’s tried-and-tested SMG, it is all there without the faff. You will be back on the field before you have time to complain about your last death cam.

There is one important catch, though, and it is a smart one. You can only bring a build into your loadout if you have already unlocked both the base weapon and each attachment it uses. That means no sneaky shortcuts to a maxed-out sniper on day one, no bypassing the grind. You still need to put in the hours to earn your gear. This keeps the game’s balance intact and makes sure unlocking new items still feels worthwhile. In the end, it is a handy tool for sharing knowledge and speeding up setup, not a way to skip progression—and that balance is exactly why the u4gm CoD BO7 Bot Lobbies community is already talking about it non-stop.