A recent hidden update in Warzone has significantly enhanced the performance of submachine guns (SMGs) from Modern Warfare 2 and 3, making them formidable contenders in close-quarters combat. Warzone content creator Zyro highlighted a key change: Raven Software improved the slide-to-fire speeds for these older SMGs, addressing a long-standing issue where their movement mechanics didn't align with the more agile mechanics of newer SMGs. This adjustment allows weapons like the Superi 46 to compete effectively with the current meta 

The Superi 46, in particular, has gained attention due to its impressive mobility and low recoil, making it ideal for aggressive playstyles on smaller maps like Rebirth Island and Area 99. With the recent changes, its time-to-kill (TTK) has become competitive, even against some assault rifles .Additionally, the AMR9 SMG has also benefited from recent updates, receiving a fire rate buff and improved damage ranges. Experts like JGOD have noted its "crazy" TTK, making it a viable option for players seeking a versatile SMG 

These developments suggest a shift in Warzone's meta, where older SMGs are regaining relevance and offering players more diverse options for close-range engagements.