The weapons in Call of Duty: The different modes of Black Ops 4 usually have the same statistics, with one exception: Blackout weapons have not received the same updates of patches they have in other multiplayer modes.
Several weapons have since the release of Black Ops 4, which came out on October 12, 2018, nennfed or changed in any way.
But these changes seem to have affected none of the weapons in blackout mode, which apparently had their own weapons updates and patches.
According to a YouTube video by Call of Duty expert TheXclusiveAce, most weapon statistics between Blackout and other multiplayer modes are the same, except in certain cases such as the ICR-7.
The ICR-7 received a Nerf that drastically reduced the effectiveness of headshots, but not in blackout, where weapon statistics remain unchanged.
This means that the ICR-7 is much more powerful in blackout, provided players can not hit hose-headshots.
Other weapons, such as the Spitfire and the Auger DMR, have received recoil forces on blackout, which they did not do in other multiplayer modes.
Based on this, Treyarch's weapons appear to be slightly different from blackout and other modes.
For this reason, Black Ops 4 players must look for patch updates for the latest Call of Duty titles.