Half-Life: DiamonD SD Pack + MP5 replacement. Open with WinRAR. Be sure to read the readme -- they're there for a reason!
Steam and WON users already using DiamonD's SD pack:
You must manually drag and drop files for this to work.
Just extracting will overwrite the rest of the pack!
MP5 model: Schmung
MP5 skin : Thanez, Grizzly
Trijicon model: Dav0r
Trijicon skin: the_tub
HEV arm reskin: waqwarrior
HEV arm credit: DiamonD
Sprite Base: DiamonD
Preview image showcases weapon and sprite of MP5. Other sprites from DiamonD's pack.