The Gear Overhaul is a several-month joint venture between Orudeon, AngrierPat, the_Nocturni, Zububu, LightChaosman, Mike, FromDarkHell et al.
This mod extensively tweaks or overhauls (almost) every brand in the game to improve competitiveness of low-performing items or brands, as well as create sensible or synergistic changes.
Overall, your gun choice, accessory choice, and even shield choice should matter a little bit less.
This mod requires BLCMM to function correctly.