The Colt AR-15 SP1 with the serial number 85440 was likely manufactured in the early 1970s. Colt's SP1 series was produced from 1964 until the early 1980s, and specific serial number ranges can help narrow down the production year. For exact dating, consulting Colt's historical records or a reference guide on Colt AR-15 serial numbers may provide the most accurate information.
What is the manufacture date of a Colt AR15 rifle serial number 192754 model SP1
Made in 1964. First year of production.
You will have to call Colt to find out.
It was made in 1975
100-1000 usd
Depends on markings on upper.
50-1500 usd
I have an SP1 I purchased new in 1978 with a 108,xxx serial number.
Proofhouse.com has Colt sn tables. You can also call Colt and they will tell you.
100-1500 depending on specifics
value depends on overall condition.................
It's a 1975 preban model