3D practice: Grenade

Hello, something I did quickly in class the other day as an exercise.  We needed to keep the polygon count low...that is starting to get me down I would say.  I really want to do something with countless amount of polygons and to model something as detailed as I would like.  Anyway I had to keep this model under 300 Tris.  Am getting faster with the whole modelling business which is great!  This was done with a time limit as well.