Perhaps at one point it was, but not anymore - a service member's Social Security Number is their serial number now. Even if it was, that information would not be made available to you.
me
You did not provide a serial number.
now days a military serial number is the assigned social security number. find the persons social security number and you have the army serial number............
Yes
You will have to contact Marlin to find out.
On the butt
A Colt single action 1860 army with that serial number was made in 1866.
In order to answer your question correctly,I would need to know the model of Winchester that your serial number belongs to.
Your colt single action army dates to 1881 with the serial number you provided.
Colt army .45 with that serial number was made in 1944 by Remington Rand for Colt.
serial # 56649
Colt army special was produced in 1916.