All-in-all there are 12 guns that have been buffed or nerfed, from the Krig 6 assault rifle to the DMR 14 tac. rifle, alongside eight attachments.
All but two of the weapons tinkered with are from the Black Ops Cold War arsenal with the developers stating that some of these weapons proved too easy to use compared to their effectiveness and likewise some that were difficult to handle translated to poor performance.

As the developers explain in the patch notes:
"While assessing the power level of BOCW Weapons, we have observed some disparities between ease of use and efficacy," reads the notes. "The Krig 6 (BOCW) has shown an impressive performance at just about every engagement range. While we believe it is important to have a wide array of Weapons which can be utilized by players of all skill levels -- it is critical to the health of the game that their effectiveness scales appropriately with the skill required to wield them."
All weapon buffs and nerfs in Warzone Season 5 Reloaded

Assault Rifles
- C58 (BOCW)
- Recoil increased.
- EM2 (BOCW)
- Base Optic eye position retracted
- Assault Rifle Bravo (MW)
- Upper Torso Multiplier decreased from 1.1 to 1
- Groza (BOCW)
- Sprint to Fire Speed increased by 15%
- Krig 6 (BOCW)
- Maximum Damage decreased from 30 to 29
- Mid Damage now 25
- Minimum Damage decreased from 25 to 23
- Weapon Kick adjusted
Light Machine Guns
- Light Machine Gun Alpha (BOCW)
- Recoil increased slightly
Tactical Rifles
- Tactical Rifle Charlie (BOCW)
- Recoil decreased
- DMR 14 (BOCW)
- Recoil adjusted
Rather than an outright ‘decrease’ to Recoil, this change is more of a rework. The DMR 14 (BOCW) has languished since its changes in season one, but it has not been forgotten. Expect the DMR 14 (BOCW) to feel like a new Weapon. Semi-auto Weapon enthusiasts rejoice, as the DMR 14 (BOCW) may see a real resurgence following this change.
- M16 (BOCW)
- Weapon Kick decreased
- Type 63 (BOCW)
- Headshot Multiplier decreased from 2.1 to 1.58
- Neck Multiplier increased from 1.2 to 1.58
- Upper Torso Multiplier decreased from 1.2 to 1
- Lower Torso Multiplier decreased from 1.1 to 1
- Weapon Kick decreased.
Submachine Guns
- Submachine Gun Charlie (MW) with 10mm Auto 30-Round Mags
- Maximum Damage decreased from 34 to 31
- OTs 9 (BOCW)
- Maximum Damage Range decreased by 6.2%
- PPSh-41 (BOCW)
- Weapon Kick adjusted
- ADS Sway adjusted
Sniper Rifles
- Swiss K31 (BOCW)
- Recoil adjusted
- ZRG 20mm (BOCW)
- Recoil adjusted
All attachment buffs and nerfs in Warzone Season 5 Reloaded
Season 5 Reloaded sees changes to some barrels and a rear grip.
Barrels
- Assault Rifles
- Ranger/Liberator/GRU Composite
- Vertical Recoil Control decreased from 10% to 8%
- Vertical Recoil Control decreased from 10% to 8%
- Reinforced Heavy/VDV Reinforced/Contour
- Horizontal Recoil Control decreased from 5% to 4%
- Vertical Recoil Control decreased from 5% to 4%
- Takedown/Contour M2
- Horizontal Recoil Control decreased from 10% to 8%
- Horizontal Recoil Control decreased from 10% to 8%
- Task Force/Spetsnaz RPK/CMV Mil-Spec
- Horizontal Recoil Control decreased from 10% to 8%
- Vertical Recoil Control decreased from 10% to 8%
- Ranger/Liberator/GRU Composite
- Light Machine Guns
- Match Grade
- Horizontal Recoil Control decreased from 5% to 4%
- Vertical Recoil Control decreased from 5% to 4%
- Task Force
- Horizontal Recoil Control decreased from 10% to 8%
- Vertical Recoil Control decreased from 10% to 8%
- Match Grade
- Tactical Rifles
- DMR 14 (BOCW)
- 16.3” Titanium
- Damage Range decrease reduced from 25% to 20%
- Rate of Fire increase reduced from 16.7% to 15%
- 16.3” Titanium
- DMR 14 (BOCW)
Rear Grips
- Assault Rifles
- Groza (BOCW)
- Serpent Grip
- ADS Speed increase reduced from 9% to 7%
- Serpent Grip
- Groza (BOCW)
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