Most of the external finish is worn away but given this shotgun’s probable use as an everyday defense (home, woods, ranch, etc.) or even law enforcement riot gun, its current condition is not really surprising.

For the connoisseurs of all things trench related, Vintage Firearms is pleased to present this high condition all factory original with historical stamps and rollmarks - The Stevens Model 520-30 Trench gun. This 520 also has the safety lever on the inside of the trigger guard. Stevens Arms, Year 1943, 12 Gauge, 7lb 8oz, LOP 14 1/16'. To do so, one must push an external button forward on the left side of the receiver. While the model number is in line with what Canfield reports as WWII shotguns (40,000,-60,000), it doesn't have the military markings. What this means is that the 520 will release the action bar only if the shotgun is fired. There's an M marking/proof on the trigger guard, and what appear to be four astericks on the barrel where it meets the receiver.

It is a simple, pump-action design of which the early examples, such as this one, include an inertia lock. One of its most recognizable features is the double hump design on the top of the receiver. The Stevens 520 is another one of the famous John Browning’s designs. Stevens Model 520 1st Variation (1909-25) 12-gauge Inertia Lock The serial number range for the Stevens model 520-30 military shotguns is from 30,000-70,000.As to the year of manufacture you will probably have to contact Savage/Stevens directly. Serial Number: Catalog Page: 209 Class: Curio & Relic Long Gun Description: A very late entry into the field of First World War fighting shotguns, the Stevens Model 520 Trench Gun was an improvement from a base sporting design created by John Browning, which had a number of virtues for combat work.

Stevens 520 serial numbers