R-99, Wingman, Peacekeeper need nerfs. Same since S1.
R-99: not nearly enough spread when fired full-auto. Should never be a laser beam, especially at range, unless fired in very short bursts.
Wingman: same issue it's had since release. Too much raw damage. It has fast ADS movement speed, only 'needs' 2 attachments, quick to reload, has the 'heavy ammo' benefit - it does not need to be doing that much up-front damage. There's a reason nobody picks up sniper rifles, they can just use the Wingman to poke at range instead and then use it again up close. Every player abuses the wingman to no end and has been since season 1. It's an easy-mode weapon for anybody that uses it. It's high time to stop dancing around the raw damage aspect and nerf that directly, as you have with so many other guns.
Peacekeeper: exact same problem as Wingman. It should never be able to one-shot unshielded players without the pellet spread being focused on the head, let alone one-shot players *with* shields if it does hit the head. Nerfing the magazine size or reload speed or firing rate or spread will not fix that problem. The problem is the raw damage. Lower it.
One should bear in mind the ridiculously quick movement this game has compared to other BRs. Having the 'close-range' weapons be so powerful, even at range, combined with that movement makes any other kind of weapon mostly irrelevant.