The mp5_bm16_mod.zip file you have requested: Call of Pripyat / Mods / MP5/BM16 MOD - 1.23mb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Call of Pripyat and upload any files you want to share or are missing. This is the only information we could locate:
This mod gives you the ability to use the MP5/BM16 in the pistol slot. You can still use them in the regular (large weapon) slot and can even have one in both slots at the same time.