The person who would most likely know about that is Cheese. Most of us usually only work on one type of rifle, at least at any given time. I couldn't tell you about aps2 but AEGs have longer buckings, so to my knowledge that means a longer groove. AEGs also don't have the little notch the end of the bucking grabs onto. Other than that I'm not sure about what the difference is between VSR and aps2 cuts.