NUPROL - M4 A.X.E. Stock - Black, a very clever stock that provides a slim line back end to your Airsoft gun. Suitable for a variety of AEG's, we have tested it on CAA, G&G, ARES and KWA and it functions perfectly with no wobble on every tube. You can fit this stock without the need of tools and slides very nicely on an M4/M15/M16 buffer tube. Check out our Instagram account and Facebook page for photos of this stock fitted to a range of M4s.