Both guns are extremely well, i pk a lot, and personally my preference for pking is the PBP but when inside a base either attacking or defending, i prefer the BAR. The BAR has a high clip, very small freeze, and very low reload time which is why i love using it to base. The PBP shoots 4 bullets, and if you're able to land a full clip on someone they'll be dead by the third wave. I only use the PBP when i'm pking lethal or around era.