Remington model 31 16ga. Very clean. Rare.

Remington m31 16ga, 28" barrel, very good condition.
What makes this m31 different is the way the choke system was built. Note that the choke is not sweated on the barrel which was common place in 50s and 60s. But this gun has an integral multi choke barrel system machined down from a larger piece of barrel tubing. This method was discontinued because of the cost. $650.00 plus $50.00 shipping.