This has been tried over and over again with no success. I believe I have had my hands on about three different versions since 1987 and none worked. The last one I saw was made by Zeiss. Close but no banana.
Of course the military is all about technology instead of teaching basic rifle marksmanship that does not require batteries, does not fog on humid rainy days, does not break on impact, and does work every dam time.
Off the soap box. Sorry.
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Hold Hard guys
Rick B.
Knowledge is knowing a tomato is a fruit.
Wisdom is knowing it is great on a hamburger but not so great sticking one up your ass.
Author - Richard.
Experience is what you get right after you need it.
Author unknown.
