Ithaca Model 37: Bottom‑Eject Workhorse From Featherlight to Deerslayer

The first time you run a Model 37 hard in the field, you notice two things: empties land at your boots and the stroke is glassy if the gun is in tune. For many of us, it was the farm gun behind the mudroom door or a clean police trade. Either way, the Ithaca Model 37 is a pump that earns respect the honest way.

Origins and design

The Model 37 traces to a 1915 John Browning patent that became Remington’s Model 17. Ithaca’s 1937 launch refined that idea for durability and easy manufacture. More than two million have been built in the United States, which says plenty about the design’s staying power. A key mechanical detail separates it from most pumps: the bolt locks by tipping up into a recess in the stressed steel receiver rather than into a barrel extension. That smart lockup helps explain the 37’s trim weight without exotic materials and its long service life.

Bottom ejection benefits

The Model 37 feeds and ejects from the bottom. That keeps the receiver sides closed to grit, drops empties clear of left-handed shooters, and in the rare case of a case head failure directs gas downward rather than across your face. In dirt, corn stubble, and blinds full of debris, the closed receiver earns its keep.

Featherlight today

When it debuted, the Model 37 was billed as the Featherlight. In 12 gauge it still weighed a bit over seven and a half pounds, light for a steel-receiver pump of the era. Later, Ithaca built an aluminum-receiver Ultra Featherlight in 20-gauge at about 4.5 pounds. Today’s production Featherlight keeps the DNA and adds practical updates: a 28 inch vent rib barrel with a TruGlo front sight, three choke tubes, 3 inch chamber, 4+1 capacity, AA walnut, Pachmayr pad, and a crisp 4 to 6 lb trigger. Current catalog guns are listed at an MSRP of $2,799 and the full spec is posted on Ithaca’s Model 37 Featherlight product page.

Deerslayer variants

As slug-only deer zones grew, Ithaca leaned into accuracy. The Deerslayer pairs rifle sights with a slug barrel for repeatable point of impact. The Deerslayer II goes further with a fixed, threaded-in barrel for tighter groups and consistency. Ithaca’s current catalog also includes the Deerslayer III for dedicated slug hunters. If you are paying a premium, confirm barrel markings and correct sights to separate factory Deerslayers from later barrel swaps.

Gauges and specialty trims

Across its run the Model 37 has appeared in 12, 16, 20, and 28 gauge. You will encounter Skeet and Trap versions with longer ribs, English straight stocks, New Classic and Deluxe Vent Rib trims, Turkeyslayer and Waterfowler field models, and Youth offerings. Barrel length often telegraphs purpose, from 20 inch riot guns to 30 inch trap and duck guns. The 20 gauge Ultra Featherlight is the outlier that carries like a wand.

Police and military service

The Model 37 did more than ride the uplands. Ithaca built trench, riot, and training versions for the U.S. government and the gun saw service in World War II, Korea, and Vietnam. It was issued widely in American law enforcement, including the New York Police Department, Los Angeles Police Department, and Los Angeles County Sheriff’s Department, with countless smaller agencies following suit. Riot guns typically wore 20 inch barrels and plain beads. A compact Stakeout variant with a pistol grip and about a 13 inch barrel was built for undercover work and even turned up on television in the 1980s. Genuine factory Stakeouts are scarce and regulated; later short-barrel conversions require careful legal due diligence.

How it carries and shoots

The steel receiver gives recoil a solid shove instead of a slap. The gun carries flat, cycles in a straight line, and mounts repeatably. Southpaws appreciate the bottom ejection, and right-handers do too when empties pile neatly at their feet. With a Deerslayer barrel and rifle sights, the same action settles behind the sights with confidence.

Used-buyer checklist

• Cycle with dummy shells. Look for smooth feed and positive downward ejection. Hesitation or double feeds can point to tired shell stops or a lifter issue.
• Confirm bolt lockup. With the action closed, press the forend forward and back while watching the bolt through the loading port. Excess play can hint at wear in the locking surfaces.
• Inspect receiver rails and the loading port edges. Heavy peening or burrs slow the stroke.
• Check barrel fit. On standard Featherlights the barrel should seat squarely and tighten correctly. On a Deerslayer II, verify the fixed, threaded-in barrel rather than a simple swap-on slug tube.
• Examine the wood. Look for wrist and tang cracks and oil-soaked, softened wood around the receiver.
• Mind the choke situation. Many older barrels are fixed choke. If you want tubes, verify the current barrel has them.
• Verify sights and markings. Factory Deerslayers are marked and wear rifle sights.
• Sort honest wear from abuse. Rack rubs and thin bluing are fine on police trade-ins. Dented magazine tubes or bent barrels are not.
• Safety and trigger feel. The safety should click positively. Triggers vary by era, but modern spec is a clean 4 to 6 lb break.

If a seller is asking a premium for police or military provenance, ask for documentation. A rack number or a story is a lead, not proof.

Collector notes

For a representative set, consider a clean Featherlight, a Deerslayer or Deerslayer II, a 16 gauge for charm, and a correct 20 inch riot configuration. Clones have been produced abroad, including Chinese and Argentine copies. They are curiosities but not the same as an Ithaca-built gun, so study receiver markings and overall finish before committing.

Parts and support

Ithaca still builds the Model 37 and supports it with parts and service. That makes refreshing a family gun or pairing a modern barrel with an older receiver straightforward. Start with the company’s site for current offerings and support info at ithacagun.com. For a well-sourced history and variant overview, see American Rifleman’s writeup on the Model 37 Featherlight: American Rifleman article.

Final take

Since 1937 the Model 37 has stayed true to what it is: a bottom-ejecting, steel-receiver pump that shrugs off grit and keeps running. Whether you want a new Featherlight with modern touches, a deer-ready Deerslayer, or a solid field gun with history, the platform makes the choice simple. Shoulder it, check the barrel and sights against your use, and buy with confidence.