Description
There's something refreshing about a firearm that does one thing and does it well. The Chipmunk Hunter 40001 from Keystone Sporting Arms is a manual-cocking, single shot bolt-action pistol chambered for .22 S/L/LR, which means it'll run .22 Shorts, Longs, and Long Rifle without complaint. Load a round, pull the metal cocking knob, take your shot. That one-shot rhythm slows you down in the best way, and it's why these little pistols have earned a loyal following among small game hunters, plinkers, and folks teaching the fundamentals of marksmanship.
What Makes the Chipmunk Hunter Worth a Look
The walnut stock gives this pistol a classic look you don't see much anymore at this size, paired with a blued barrel that comes threaded 1/2×28 with a cap installed from the factory. That threading opens the door to muzzle devices down the road, and the receiver is drilled and tapped if you'd rather run an optic than irons. Speaking of irons, the Williams Fire Sights are a genuinely nice touch, with a fiber optic front that gathers light and an adjustable rear so you can dial in your point of impact. The EZ Load feed ramp on the .22 LR models makes dropping a round into the chamber quick and fumble-free, which matters more than you'd think on a single shot.
Handling and Trigger on the Hunter 40001
At roughly 2.36 pounds and 17.5 inches overall, this is an easy pistol to carry all day in a small game loadout or toss in a range bag. The trigger breaks around 2.5 to 3 pounds, which is lighter and cleaner than most rimfire handguns out of the box, and it makes precise shots on squirrels, cans, and steel a lot more attainable. The safety is a rebounding firing pin that stays automatically blocked until you deliberately cock the action, so the pistol only fires when you mean it to.
Made in the USA by the same folks behind the Crickett youth rifles, the Chipmunk Hunter 40001 is a simple, well-built rimfire that teaches good habits and never stops being fun. One trigger pull at a time.
Key Specifications
- Model Number: 40001
- UPC: 645221400019
- Manufacturer: Keystone Sporting Arms (Chipmunk)
- Caliber: .22 S/L/LR
- Action: Manual-cocking single shot bolt action
- Capacity: 1 round
- Barrel: Blued, threaded 1/2×28 with cap
- Sights: Williams Fire Sights, fiber optic front, adjustable rear
- Stock: Walnut
- Finish: Blued
- Overall Length: 17.5 inches
- Weight: 2.36 lbs
- Trigger Pull: Approx. 2.5 to 3 lbs
- Safety: Rebounding firing pin, automatically blocked
- Receiver: Drilled and tapped for optics
- Loading Aid: EZ Load feed ramp
What’s Included
- Chipmunk Hunter 40001 single shot pistol
- 1/2×28 thread protector cap (installed)
- Integrated EZ Load feed ramp
- Owner's manual
Frequently Asked Questions
Can the Chipmunk Hunter 40001 shoot .22 Shorts and Longs, or just Long Rifle?
It handles all three. The chamber is cut for .22 Short, Long, and Long Rifle in both standard and high velocity loadings. Since it's a single shot with no magazine to cycle, there are no feeding issues to worry about when switching between them, which makes it a great way to burn through odd boxes of rimfire ammo.
Is the barrel on the Chipmunk Hunter threaded from the factory?
Yes, the barrel comes factory threaded in the common 1/2×28 pattern with a protective cap installed. That's the standard thread pitch for most .22 muzzle devices, so adding accessories later is straightforward.
Can I put an optic on this pistol?
You can. The receiver comes drilled and tapped for scope mounts, so a pistol scope or small red dot is an easy addition. That said, the included Williams Fire Sights with the fiber optic front are bright and adjustable, and plenty of owners never feel the need to swap them out.
How does the manual cocking action work on the Hunter 40001?
After you load a round and close the bolt, the pistol won't fire until you deliberately pull the metal cocking knob at the rear of the action. Combined with the rebounding firing pin that stays blocked until cocked, it means the pistol is only ready to fire when you decide it is. It's a deliberate, simple system that makes this a popular choice for teaching new marksmen good habits.





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