Colt 4X20 SP1 scope’s were manufactured in the 70s-80s it has a duplex reticle. Bullet drop compensator which is part of the elevation turret. The ranges are marked 1 to 2-3-4-5 and each are 100-yard increments. Range adjustments to 100-500-yards and Colt quick detachable carry handle mount.
The 4×20 was made in Japan for Colt with the Colt logo and is in good to very good condition.
No box or paperwork.