Sig Sauer P322 22 LR 4 Optic Ready Threaded Barrel Black
Pros & cons
What works
- High 20-round factory magazine capacity (25rd available)
- Optics-ready slide with no adapter plate needed
- Lightweight at roughly 17.1 ounces
- Ambidextrous controls and interchangeable trigger shoes
Trade-offs
- Factory magazines exceed California's standard capacity limit
- Sig no longer publishes an official MSRP, so street prices vary by retailer
About this product
The Sig Sauer P322 is a full-size .22 LR pistol built as an affordable rimfire trainer for shooters who carry a Sig centerfire pistol, and as a standalone range gun for anyone who wants high-capacity plinking with modern features. This listing is the black finish with the 4-inch threaded barrel and factory optics-ready cut.
What's the actual capacity and how does it ship?
The P322 ships with two 20-round steel magazines standard, with an optional 25-round extended magazine available separately for shooters who want even more rounds before a reload. That kind of capacity on a rimfire plinker is one of the P322's biggest selling points — most .22 LR pistols top out well below 20 rounds per magazine.
What features does it include out of the box?
The slide has an optics-ready cut with a removable rear sight plate, so mounting a Sig ROMEOZero (or a compatible mini red dot) doesn't require an aftermarket adapter plate. The threaded barrel comes with a factory thread adapter, making it suppressor-ready without extra parts. Controls are fully ambidextrous, the trigger is interchangeable between a flat or curved shoe depending on preference, and the sights are fiber optic front and rear for a fast, high-visibility sight picture. The frame is polymer over a stainless-steel chassis, with an integrated magwell and a full-length accessory rail up front for a light or laser.
Unloaded weight comes in around 17.1 ounces, making the P322 noticeably lighter to carry around the range all day than most steel-slide .22 pistols, while still holding a full-size grip footprint that mirrors Sig's centerfire P320/P322-adjacent lineup closely enough to make cross-training useful.
Who is the P322 a good fit for?
This is a strong pick for Sig owners who want a low-cost way to rack up trigger time without burning through centerfire ammo, for new shooters who want a soft-shooting, high-capacity gun to build confidence and fundamentals, and for competitive rimfire shooters who want the ambidextrous controls and threaded barrel for suppressor use where legal. The 20-round (or 25-round) capacity also makes it a fun, low-cost range gun on its own merits, independent of any training crossover.
As a firearm, the P322 cannot ship to your home. It ships to a licensed FFL dealer local to you, where you'll complete the required background check and paperwork in person before taking possession. California buyers in particular should confirm current magazine capacity rules with their FFL before ordering — the P322's factory 20-round magazines exceed California's standard-capacity limits, so a compliant configuration or aftermarket-legal magazine may be required depending on current state law.
Sig no longer publishes a standard MSRP the way it once did, and street pricing varies by retailer and by whether the gun is sold as a base model or in a bundle with an optic. If you're comparing prices across sellers, confirm exactly what's included — base pistol only versus a package with a red dot or additional magazines — before assuming you're comparing like for like.
The P322's full-size grip footprint and low recoil also make it a genuinely good choice for teaching new shooters. Because .22 LR generates so little recoil compared to any centerfire pistol, new shooters can focus on grip, trigger press, and sight alignment without the flinch response that heavier calibers can create early in someone's shooting experience — all while training on a pistol that's sized and shaped like a full-duty handgun rather than a toy-like plinker.
FFL transfer required
This item is a firearm and ships only to a licensed FFL dealer, never to a home address. At checkout, enter your preferred dealer as the shipping address, or leave it blank and we will assign a licensed dealer near you at no extra cost. You complete the background check and paperwork with the dealer when you pick up.
California buyers: handguns must be on the California roster for delivery to a California FFL, a Firearm Safety Certificate (FSC) and DROS are handled at the dealer, and the 10-day waiting period applies. Out-of-state buyers receive the firearm through their own local FFL under their state's rules.
Key attributes
| Transfer | Ships to your FFL dealer |
| Caliber | .22 LR |
| Capacity | 20+1 (25+1 optional) |
| Barrel Length | 4 in |
| Action | Striker-Fired Semi-Auto |
| Finish | Black |
Frequently asked questions
- How many rounds does the Sig P322 hold?
- It ships with two 20-round magazines standard, with a 25-round extended magazine available separately.
- Is it optics ready out of the box?
- Yes — a removable rear sight plate lets you mount a Sig ROMEOZero or compatible mini red dot without an adapter plate.
- Does it come with a threaded barrel?
- Yes, this listing has a 4-inch barrel with a factory thread adapter, suppressor-ready out of the box.
- How much does it weigh?
- About 17.1 ounces unloaded, light for a full-size .22 LR pistol.
- Is the standard magazine legal in California?
- The factory 20-round magazine exceeds California's standard-capacity limits. Confirm a compliant configuration with your FFL before ordering.