Client.cpp find this:
Code:
void drawPlayerEsp

somewhere in body add following:
Code:
if (cvar.reloadmeter)
  {
      float tempy = 0.0;
      int atype = Cstrike_SequenceInfo[ent->curstate.sequence];
      if( atype == 2 || atype == 4 || atype == 5 )
      {
        oglSubtractive=true;
        gEngfuncs.pfnFillRGBA(vecScreen[0]-26,vecScreen[1]+tempy+1,53,12,0,0,0,250);
        oglSubtractive=false;
        gEngfuncs.pfnFillRGBA(vecScreen[0]-25,vecScreen[1]+tempy+2,(ent->curstate.frame/255)*50,10,r,g,b,255);
        tempy+=16;
      }

Register your cvars !