depends on what sort of realism you want. Tokyo marui mws is realistic in function and handling but not in internals It is however the best performing stock. Vfc (specifically their gen 3 rifles) are very good as well but can take a little bit of work to get as good as the mws. However they have realistically shaped internals, kick a little harder, feel a little nicer. I used to run mws rifles but I found I liked classic integral carry handle rifles more than anything modern and a vfc m16 + a set of mags worked out cheaper than converting an mws into a classic rifle on its own.