I've just recently downloaded the bwbp4, but the R9 ranger rifle and SAR 12 rifle are missing, did I do something wrong? I first installed bw v2.0 and 2.1, and after that the bwbp4.

Blegh,those weapons give me such trouble.
I couldn't remove them from loadout if I tried.

BTW,this looks like it belongs in BW support.

ok sorry bout that, I was in a hurry cause I want those guns
anyways now I know they are in the BW v2.1, but I have that too, they just won't appear in the game at the mutator screen, in not one list, loadout, arena, they ain't there

What order did you unzip them?

let me see, I unzipped all of them at once, and put all of it directly to the place where it has to be for installment

If you actually decompressed three zip files simultaneously (however you managed to do that), that would be the source of the problem. Extract BW2.0 data into UT2004's root with Use Folder Names flagged, then BW2.1 and finally BWBP4.

Also after that go to ballistic setting and into loadout and swapping to add the weapons.

Anyway does anyone know what my problem is caused by,I did normal installation but I cannot remove the guns from loadout,often there will be two copies of each!

That is caused by the two BCore files. We can do nothing about it until DC (or another coder) separates them so we can delete BCoreV2 without causing problems.

I don't have two copies of each weapon...
And i have 3 Bcore files!

Ok, thanks for the help, they appear at the loadout and function perfectly in the game
guess this topic can be closed now , unless anyone else has a problem similar to this

Compare the filesizes of BCoreV2 and BCoreV21, 701 and 760 KBs is dangerously close isn't it? You do in fact have at least two versions of the same weapon, maybe three if that third BCore is still active within the game.