How to adjust fast 3 stock cheek piece

This video show the correct way to adjust a fast 3 stock cheek piece for height.

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Currently the shopping carts for our XCR builders/configurators are not working.   If you want to order, please use the builders to configure an XCR the way you want it.  Then take a screenshot that shows all the specs your want and email to  We hope to have the system up and running again shortly.


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