Just an idea
Have 3 weapon slots
1. Primary (assault rifle, sniper, smg, pistol, launcher etc)
2. Secondary (assault rifle, sniper, smg, pistol, launcher etc)
3. Melee (sword, knife,( or maybe items like binoculars credit: BlessedSeraph))
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I think more along the lines of 1.Primary 2.Second Primary 3.Pistol/Melee