just makin' a pistol up, or ya got one in mind? if so what's your reference?

looks ok so far, just as long as you haven't applied a smooth (looks like you have) cause then your poly count will be high and it looks like you're not finished adding details. it'll get complicated to manipulate vertices later on if you let it get too poly heavy.

so we can see the model a little better throw another light on the other side... when it looks too dark you can't really make the model out too well.