I had a carbine set at one time. I am looking for a cheap set of HG's I can attach an AFG to, would like something drop in or "plug and play" for the growing nerd population here But I assume my AFG for a rail will not work with the MOE guards? Or is it somekind of adapter? Would eventually like to go all dark earth grip, HG, stock to replace the black BCM stock/grip/HG's I have. Or should I just bolt on a rail to the HG's I have and paint them? I have a FF quad rail I could put on, but i dont "need" it and I dont know if I want to go throught the trouble of putting in on.