Description
Twenty one rounds of .22 LR before you even think about reloading. That capacity is what put the Sig Sauer P322 on the map when it launched, and it is still one of the biggest reasons this pistol keeps flying off shelves. Sig designed and builds the P322 in New Hampshire, and it shows in the details. You get a fiber optic front sight paired with an adjustable rear, ambidextrous controls with a reversible mag catch, and both flat and curved trigger shoes in the box so you can set it up the way your finger likes it.
The P322 Is Ready for a Red Dot
The removable rear sight plate exposes a direct-mount footprint for RMSc pattern micro dots like the Sig ROMEOZero, so there is no adapter plate stacking things up high on the slide. Prefer to run irons? The stock sight setup is better than most rimfire pistols ship with, and the roughly 6 inch sight radius on the 4 inch barrel makes it easy to shoot well. The frame also wears a Picatinny rail up front if you want to hang a light or laser on it.
Suppressor Friendly Out of the Box
Sig includes a threaded barrel adapter with the P322, so adding a can is as simple as spinning off the thread protector and mounting up. A suppressed .22 pistol with 20+1 on tap is about as much fun as a range day gets, and it makes a fantastic low-noise trainer too.
Why the Sig P322 Makes Sense
At 17.1 ounces with a compact grip, this pistol works for just about everybody. New shooters get soft recoil and easy handling, experienced folks get a cheap-to-feed understudy for their carry gun, and everyone gets a magazine loader and two 20-round mags in the box to keep the fun going. Cheap ammo, big capacity, and real features instead of rimfire afterthoughts. That is a combination that is hard to argue with.
Key Specifications
- Model: P322
- Manufacturer Part Number: 322C-BAS
- UPC: 798681640447
- Caliber: .22 LR
- Capacity: 20+1
- Action: Single Action Only (SAO)
- Barrel Length: 4"
- Barrel Material: Carbon Steel, Threaded
- Overall Length: 7"
- Height: 5.5"
- Width: 1.4"
- Weight: 17.1 oz
- Sights: Fiber Optic Front, Adjustable Rear
- Optic Compatibility: RMSc/Shield Footprint (Removable Rear Sight Plate)
- Accessory Rail: M1913 Picatinny
- Finish: Black Hard Coat Anodized Slide
What’s Included
- Sig Sauer P322 pistol
- Two 20-round magazines
- Threaded barrel adapter
- Magazine loader
- Flat and curved trigger shoes
- Owner's manual
Frequently Asked Questions
What red dots fit the Sig P322?
The P322 has a removable rear sight plate that exposes an RMSc/Shield pattern footprint, so micro dots like the Sig ROMEOZero mount directly to the slide without an adapter plate. Most optics using that same footprint will bolt right on. If you stick with irons, the fiber optic front and adjustable rear are solid on their own.
Is the P322 suppressor ready?
Yes. This model ships with a threaded barrel adapter in the box, so you can mount a standard 1/2×28 rimfire suppressor without buying anything extra. Suppressed .22 with 20+1 capacity is one of the most enjoyable range setups out there.
What ammo runs best in the Sig Sauer P322?
Like most semi-auto rimfires, the P322 tends to run its best with quality high-velocity .22 LR loads, especially during the first few hundred rounds. Once broken in, it digests a wide range of bulk ammo well. If you shoot suppressed, subsonic loads keep things extra quiet, just expect to try a few brands to find what your pistol likes.
How many magazines come with the P322, and are bigger ones available?
This package includes two 20-round polymer magazines plus a mag loader to save your thumbs. Sig also offers 25-round magazines for the P322 separately if you want even more capacity between reloads.



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