The Brits (and others) have a Small Arms Collimator (SAC) that allows the use to confirm there weapon is zeroed / rezero a weapon (in under a minute) without live firing. It works on iron & optic sights and NVE. A version for checking laser pointers etc is also available.
It also takes the "bad shot" out of the loop.
http://www.telluricgroup.com/products/sac
http://www.pyser-sgi.com/product.asp?ParentID=438
http://www.pyser-sgi.com/images/thum..._Files/SAC.pdf
It also takes the "bad shot" out of the loop.
http://www.telluricgroup.com/products/sac
http://www.pyser-sgi.com/product.asp?ParentID=438
http://www.pyser-sgi.com/images/thum..._Files/SAC.pdf
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