Description
The SIG Sauer P322 is a ground-up rimfire design, not adapted from an existing centerfire frame. SIG built it from scratch in their New Hampshire facility, and it shows. The SAO (single-action-only) action uses a fully enclosed hammer tucked inside the alloy slide, so it looks like a striker-fired pistol from the outside but behaves like a classic single-action under the hood. That enclosed hammer contributes to a trigger pull that breaks cleanly and consistently, which is a big part of why this gun just feels good to shoot. The polymer grip module rides on a stainless steel internal chassis, and the whole package comes in at just 17.1 ounces unloaded.
What Makes the P322 Stand Out on the Range
The optic-ready slide accepts the Shield RMSc footprint, meaning you can pull the rear sight plate and drop in a micro red dot without any adapter plates. The factory fiber-optic sights are front and rear, both bright and fully adjustable for windage and elevation, so you're already dialed in even without a dot. The grip is ergonomically shaped with an undercut trigger guard and a beveled magwell, and the M1913 Picatinny rail on the dust cover lets you run a light or laser if that's your thing. Both the thumb safety and slide release are ambidextrous, and the magazine catch is reversible, making it fully lefty-friendly right out of the box.
The P322's Trigger Customization and Controls
One of the more thoughtful touches on the P322 is the swappable trigger system. The pistol ships with both a flat-faced shoe and a traditional curved shoe installed and ready to swap, no tools needed. It takes seconds to change between the two, and the difference in feel is genuinely noticeable. Front and rear cocking serrations on the slide give you plenty of purchase for press-checks and manual cycling. Takedown is also tool-free: rotate the lever, retract the slide, and lift it off the frame.
This is the California-compliant 322C-BAS-CA variant, which differs from the standard model in two key ways: it has a non-threaded barrel and includes a magazine disconnect safety that prevents the pistol from firing without a magazine fully seated. It ships with two 10-round polymer magazines and a magazine loader.
Key Specifications
- Model: P322
- MPN: 322C-BAS-CA
- UPC: 798681700561
- Caliber: .22 LR
- Action: Single-Action Only (SAO), Hammer-Fired
- Barrel Length: 4 in
- Overall Length: 7 in
- Height: 5.5 in
- Width: 1.4 in
- Weight (unloaded): 17.1 oz
- Capacity: 10+1
- Frame: Polymer w/ Stainless Steel Chassis
- Slide: Hard Coat Anodized Alloy, Optic-Ready (Shield RMSc Footprint)
- Sights: Fiber Optic Front / Adjustable Fiber Optic Rear
- Safety: Ambidextrous Manual Thumb Safety, Magazine Disconnect Safety
- Accessory Rail: M1913 Picatinny
- Magazines Included: 2 x 10-Round Polymer
- Manufacturer: SIG Sauer (Made in USA)
What’s Included
- SIG Sauer P322 pistol
- 2 x 10-round polymer magazines
- Magazine loader
- Flat trigger shoe (installed) and curved trigger shoe
- Pistol case
- Cable lock
- Owner's manual
Frequently Asked Questions
What red dot optics are compatible with the P322's optic-ready slide?
The P322 slide is cut to the Shield RMSc footprint, which is the same pattern used by SIG's own ROMEOZero and ROMEO-X Compact optics. It's also compatible with several other micro red dots that share the Shield/RMSc pattern. You simply remove the rear sight plate and mount directly to the slide with no adapter required.
How does this CA-compliant P322 differ from the standard model?
This 322C-BAS-CA version has two key differences from the standard P322: a non-threaded barrel and a magazine disconnect safety, which prevents the pistol from firing when a magazine is not fully inserted. It also ships with two 10-round magazines instead of the standard model's 20-round magazines. Everything else, including the optic-ready slide, fiber-optic sights, ambidextrous controls, and dual trigger shoes, is the same.
Can I swap the trigger shoe on the P322 myself?
Yes, and it's one of the more user-friendly features on this pistol. Both a flat-faced shoe and a curved shoe are included in the box, and swapping between them takes just a few seconds with no tools. The difference in feel is real and worth experimenting with to find what works best for you.
Is the P322 reliable with standard bulk .22 LR ammo?
The P322 generally runs well with quality high-velocity ammunition like CCI Mini-Mags. Like most semi-auto .22 LR pistols, it can be a bit more selective about ammunition than a centerfire gun, so it helps to find a load it likes and stick with it. Proper magazine loading, making sure rounds are stacked consistently, also goes a long way toward reliable feeding.
What is the trigger action on the P322?
The P322 is a single-action-only (SAO) pistol with a fully enclosed internal hammer, so the hammer must be cocked before the trigger will fire. On a semi-auto, this happens automatically as the slide cycles. Because it's SAO rather than striker-fired, the trigger pull is generally crisp and consistent, which many people find makes it easier to shoot accurately.
Does the P322 come with a warranty?
SIG Sauer covers the P322 under their Infinite Guarantee, which is a fully transferable lifetime warranty with no registration cards or receipts required. It covers the original purchaser and any subsequent owners, which is a genuinely standout warranty in the rimfire pistol segment.





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