The Shocker is an open bolt, seal forward marker. Seal Forward Technology (SFT) is unique to the 2003 Shocker. SFT allows the Shocker to be an open bolt marker, while still having the breech seal a split second before the ball is fired, like a closed bolt. By sealing the breech before the ball is fired, the Shocker is able to have accuracy and trajectory like a traditional closed bolt, but also the rates of fire and simplicity of an open bolt.




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