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The AR15 series
Depends on model.
What is the manufacture date of a Colt AR15 rifle serial number 192754 model SP1
12k-16k
By it's serial number. Go to www.proofhouse.com and under 'long rifles' listing look for AR15 Sporter
$1599
50-1500 usd
100-1000 usd
Depends on the model
Depends on markings on upper.
100-1500 depending on specifics
value depends on overall condition.................