AirsoftTech.dk shows the front grip he made for his M249 Para AEG... "I have an LMG, the M249 Para... I'm really happy with it, but the front has one major drawback in airsoft. Theres no rail to put on a front grip :-( . So I pulled up my sleaves and got to work. I created an adapter that i could attach a rail to.

Do you want to see how I did it? Well, take a look here."