[ketzrad]

I am thinking of getting Fusion (speedload, cut off mag, bigger safe) and putting a mag extension. I expect that the thread in mag cap is same in Fusion, Gold, and Win SX3 so I can use those extensions. Is it? That is the only 'requirement', right?

Another thing is changing the stock and forearm to composite ones. I am not able find any. Do you know or can anyone try if composite stock and forearm, e.g., from Phoenix, Silver or WinSX2 / SX3 fit the Fusion? (By the looks Phoenix and Silver are basically the same, whereas Fusion and SX3 are a pair.)

Thanks!