-snip-
I really like it except the drum might look better if you beveled the edges a bit, not that it looks bad now. Also nice job on the stock it looks really good : D
Hurr durr that's not the loving point. Look at every other gun add-on in existence with a drum mag and realize that yours is stuff.
I don't really think it looks that bad the way it is especially since it's for blockland.
Also this is kinda off topic and not really directed at anyone in particular but flat shading a model doesn't mean it goes good in blockland Look at the jeep a ton of the parts on it are smooth shaded and it looks great in game.