Ctw is not a training weapon, it is only a rebrand of Systema. In terms of GBBR, if you want durability go with WE, open or close bolt, your choice. I say closed bolt because of durability. If you want awsome aesthetics in terms of what's steel and whats plastic, go with WE. If you want trades then either WA or Inokatsu. Also WE is 1:1 with real spec so real steel parts will fit many are drop in but some require a slight modification such as chargin handles and upper receivers.
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