22 lr upper vs 22lr conversion

[goo]

with decent 22 lr ammo, what would the difference in group size be at 50 yards betwween a conversion (about $200.00) vs a complete 22 ar15 upper (about $400.00)?
assume the same size (16") barrel for each.
same question for 100 yards.
thank you,
goo
usmc,'66-'72, usmcr '72-'91
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1968,
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http://farm3.static.flickr.com/2228/...b527a8.jpg?v=0
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1969,
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http://farm3.static.flickr.com/2125/...c1146b.jpg?v=0
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2009,
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http://farm1.static.flickr.com/162/4...b8662a.jpg?v=0

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