You will have to call Rock River Arms to find out.
What is the manufacture date of a Colt AR15 rifle serial number 192754 model SP1
$1599
If the serial number is SP25002; 1973
50-1500 usd
100-1000 usd
By it's serial number. Go to www.proofhouse.com and under 'long rifles' listing look for AR15 Sporter
value depends on overall condition.................
No such model exists.
No public data- but you can contact Rock River customer service
It's a 1975 preban model
$800.00
I would contact Rock River Arms directly.They will have the info that you seek.