Description
Some guns exist because they fill a practical niche. This one exists because it's just plain cool. The Big Boy Mare's Leg is Henry's tribute to the cut-down lever gun Steve McQueen carried in the old TV Western "Wanted: Dead or Alive," and Henry built it the way they build everything else: brass, blued steel, and real American walnut, all put together in the USA. The 12.9 inch octagon barrel and gleaming brass receiver give it serious presence, and the large loop lever swings fast whether you're bare handed or wearing gloves.
A Mare's Leg That Loads Like a Modern Henry
This is the Side Gate version, which is a meaningful upgrade over earlier runs. You get a loading gate on the receiver so you can top off the 5-round tube on the fly, plus Henry kept the removable magazine tube, which makes unloading at the end of a range day quick and painless. Chambering is .357 Magnum, and it happily digests .38 Special too, so you can run soft, cheap plinking loads or full-power magnums out of the same gun. At roughly 5.8 pounds with a forward-balanced octagon barrel, recoil is remarkably mild even with stout .357 loads. It might be the softest-shooting .357 you ever put rounds through.
Sights, Safety, and the Feel of a Henry Big Boy
The fully adjustable semi-buckhorn rear sight pairs with a brass bead up front, a classic setup that's quick to pick up and easy to dial in. A transfer bar safety keeps things simple with no cross-bolt button cluttering up the lines, and the action is that crisp, slick Henry cycling the brand has built its reputation on.
Why the Big Boy Mare's Leg Earns Its Spot
At 25 inches overall, it stores easily, draws smiles at the range, and looks fantastic on display. Whether you're a Western fan, a lever gun collector, or someone who just wants the most fun .357 on the firing line, this one delivers every time you work that big loop.
Key Specifications
- Manufacturer: Henry Repeating Arms
- Model: Big Boy Mare's Leg Side Gate
- MPN: H006GMML
- UPC: 619835060792
- Caliber: .357 Magnum / .38 Special
- Action: Lever Action
- Capacity: 5 Rounds (Tubular Magazine)
- Barrel Length: 12.9" Octagon, Blued Steel
- Overall Length: 25"
- Weight: Approx. 5.79 lbs
- Receiver: Polished Brass with Side Loading Gate
- Stock: Handcrafted American Walnut
- Front Sight: Brass Bead
- Rear Sight: Fully Adjustable Semi-Buckhorn
- Safety: Transfer Bar
- Made In: USA
What’s Included
- Henry Big Boy Mare's Leg lever action pistol
- Owner's manual
Frequently Asked Questions
Can the Henry Big Boy Mare's Leg shoot .38 Special as well as .357 Magnum?
Yes, it runs both. The chamber accepts .357 Magnum and the shorter .38 Special interchangeably, so you can plink cheaply with soft .38s and step up to full-power magnums whenever you like. Reliability across both cartridges and multiple bullet types has been reported as flawless in independent testing.
How do you load and unload the Mare's Leg?
You have two options for loading, which is what makes the Side Gate version so handy. Feed rounds through the loading gate on the brass receiver to top off on the fly, or load through the tube. Henry also kept the removable magazine tube, so unloading at the end of a range session is quick and doesn't require cycling live rounds through the action.
What is the recoil like on this .357 lever action pistol?
Surprisingly gentle. At nearly six pounds with a heavy octagon barrel that shifts the balance forward, the Mare's Leg soaks up .357 Magnum recoil better than just about any handgun-sized platform out there. With .38 Special loads it's about as soft as centerfire shooting gets.
Is the Henry Mare's Leg based on a real gun from TV?
It is. The design pays tribute to the cut-down lever gun Steve McQueen carried as bounty hunter Josh Randall in the late-1950s Western series 'Wanted: Dead or Alive.' Henry patterns the walnut stock after the original TV gun, then builds it with their signature brass receiver, blued octagon barrel, and smooth action.





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