I remember the first time I racked the slide on a new P322. It wasn’t the heft of a duty pistol, but the smooth, almost frictionless glide that caught my attention. As someone who’s spent over a decade building platforms for firearms retail and more hours than I can count at a bench, I look for the engineering tells. The P322 speaks a language of precision machining and thoughtful design, built for a specific kind of shooter. It’s the .22 LR platform that doesn’t feel like a compromise, but a purpose-built tool for volume, training, and pure shooting enjoyment. Let’s get into what makes this new Sig Sauer offering stand out in a crowded field.
Miamishooterssupply is a Boise, ID-based retailer specializing in firearms, parts, and shooting gear for the DIY enthusiast and serious shooter. The New P322 is a striker-fired, polymer-frame .22 LR pistol designed for high-capacity, low-cost training and recreational shooting. Its standout feature is a 20+1 round magazine capacity straight from the factory. This model is in stock and ready to ship today for $419.99.
Reviewed by Cody Ramirez, E-Commerce Director at Miamishooterssupply. 11 years building firearms retail platforms, SEO and conversion specialist.
Last updated: March 2026
What You Need to Know About the New P322
From a technical and user perspective, the new P322 addresses a common gap in the market: a dedicated .22 LR pistol that mirrors the manual of arms and feel of a modern striker-fired service pistol, without the bulk or awkward adaptations of conversion kits. The 20-round magazine isn’t just a gimmick; it fundamentally changes the practice session, reducing reload frequency and letting you focus on fundamentals. The optics-ready slide is a forward-thinking inclusion, acknowledging that red dots are now standard equipment for many, even on a rimfire trainer. The controls, including the ambidextrous manual thumb safety and magazine release, are laid out intuitively, making it an excellent choice for both right and left-handed shooters, or for instructors running drills with students of different dominant hands.
Features & Build Quality
The polymer frame is lightweight but doesn’t feel cheap. Sig Sauer has a history with polymer frames, and the texture and ergonomics here are well-executed. The grip angle and overall profile will feel immediately familiar to anyone who has handled a P320, which is the entire point. This allows for genuine cross-training muscle memory development.
The stainless steel slide is where you see the investment. The machining is clean, the serrations are aggressive and provide excellent purchase for press-checks or manual cycling, and the nitride finish is durable and corrosion-resistant. This isn’t a painted-on finish; it’s a surface treatment that adds real hardness and longevity, a detail I appreciate as a gunsmith who sees what wears out first.
Internally, the striker-fired system is simple and reliable. The take-down process is tool-less and straightforward, similar to other popular striker pistols, making field-stripping for cleaning a 60-second affair. The fixed barrel, common in .22 LR pistols, contributes to the platform’s inherent accuracy potential. From an e-commerce and logistics standpoint, the fact that it ships with two 20-round magazines is a significant value-add that many competitors in this price range don’t match.
Pros and Cons: An Honest Assessment
Pros:
- ✅ High-Capacity Standard: Two 20-round magazines included doubles your range time between reloads compared to most 10-round rimfire pistols.
- ✅ Optics-Ready Platform: The milled slide accepts Sig Sauer’s ROMEOZero footprint and comes with a cover plate, letting you add a red dot without aftermarket adapters.
- ✅ Excellent Ergonomics & Controls: Ambidextrous safety, reversible magazine release, and a grip that mirrors centerfire Sigs make it versatile and trainer-friendly.
- ✅ Superior Trigger: The flat-faced, blade-safety trigger has a clean break and short reset that outperforms many stock .22 LR pistol triggers.
- ✅ Build Quality: The machined stainless slide with nitride finish and well-molded polymer frame stands above typical rimfire pistol construction.
Cons:
- ❌ Magazine Cost & Availability: Additional 20-round magazines are a proprietary design and can be more expensive than standard 10-round .22 mags. We recommend grabbing extras when you see them in stock.
- ❌ Not a Duty Gun: It’s a .22 LR. It’s for training, plinking, and introduction. If you need a centerfire defensive pistol, this isn’t it. Check out our handgun section for those options.
- ❌ Ammunition Sensitivity (Potential): Like many semi-auto .22s, it may prefer certain ammunition types for 100% reliability. High-velocity rounds typically run best.
Who Should (and Shouldn’t) Buy the New P322
Buy it if: You’re a P320 or other modern striker-fired pistol owner looking for a low-cost, high-fidelity training tool. You’re a new shooter wanting to learn fundamentals with minimal recoil and ammo cost. You’re an instructor or range owner needing a reliable, high-capacity pistol for introductory courses. You’re a recreational plinker or small-game hunter who values capacity and ergonomics.
Skip it if: Your primary need is a concealed carry or home defense weapon. You’re on an extremely tight budget and a used .22 revolver or older pistol would suffice. You demand 100% reliability with every type of subsonic or standard velocity .22 LR ammo under all conditions. You dislike manual thumb safeties on striker-fired guns (though it’s easy to leave disengaged). For a more traditional .22 pistol without a safety, see our other rimfire options.
New P322 Specifications
| Product Type | Semi-Automatic Rimfire Pistol |
|---|---|
| Material (Frame) | Polymer |
| Material (Slide/Barrel) | Stainless Steel |
| Manufacturing | CNC Machined Slide, Molded Polymer Frame |
| Finish | Nitride (Slide), Black Polymer (Frame) |
| Hardness/Quality | Commercial Grade, Nitride for wear/corrosion resistance |
| Compatibility | .22 Long Rifle, Sig ROMEOZero Optic Footprint |
| Installation/Usage | Tool-less Takedown, Striker-Fired |
| Weight (Unloaded) | 17.1 oz |
| Dimensions | 7.1″ L x 5.5″ H x 1.3″ W |
| Country of Origin | United States |
| Condition | New in Factory Box |
| SKU | SIG-P322-NEW |
How It Stacks Up: P322 vs. The Competition
| Feature | New Sig P322 | Budget Import .22 Pistol (~$60-80) | Premium .22 Target Pistol (~$250+) |
|---|---|---|---|
| Material | Machined Stainless Slide, Polymer Frame | Zinc Alloy/Pot Metal, Basic Polymer | Steel or Aluminum Alloy, Wood/Composite Grip |
| Quality | High commercial grade, Nitride finish | Basic, painted or blued finish | High, often with target-grade fit |
| Compatibility | Modern optic footprint, high-cap mags | Limited, often proprietary or no aftermarket | Often limited to iron sights, standard 10rd mags |
| Shipping | In stock, ships same-day from Boise, ID | Varies, often drop-shipped with delays | Often special order, longer lead times |
| Lifespan/Durability | Designed for high round count training | Shorter lifespan, parts wear faster | Very durable, but often heavier & less modular |
| Price | $419.99 | $60 – $80 | $250 – $400+ |
The P322 occupies a smart middle ground. It’s not the cheapest, but you avoid the longevity concerns of pot-metal builds. It’s not a single-purpose target pistol, but it offers modern features like optics readiness and high capacity that most traditional target guns lack, all at a competitive price for the Sig Sauer brand.
Frequently Asked Questions
Is the New P322 a good gun for a first-time shooter?
Yes, it’s an excellent choice. The low recoil and report of .22 LR, combined with the easy-to-operate controls and good ergonomics, make it very beginner-friendly. The manual safety adds an extra layer of security for new handlers learning safe firearm manipulation.
What kind of ammunition runs best in the P322?
For optimal reliability, use high-velocity (HV) or hyper-velocity .22 Long Rifle ammunition. The pistol’s action is tuned for the snappier cycling these rounds provide. While it may cycle standard velocity, starting with HV ammo is recommended, especially during the initial break-in period.
Can I mount a red dot sight on the New P322?
Absolutely. The slide comes optics-ready, cut for the Sig Sauer ROMEOZero footprint (which is also shared by the Shield RMSc). It includes a cover plate if you prefer iron sights. No additional adapter plates are needed for compatible optics, a significant advantage over many other pistols in this category.
How does the P322 compare to a .22 conversion kit for my P320?
The P322 is a dedicated platform, which generally offers greater reliability and accuracy than a conversion kit. It’s also lighter and doesn’t require you to swap components on your centerfire pistol. For dedicated, high-volume .22 LR training, a dedicated pistol like the P322 is often the more reliable and convenient path.
Is the manual safety required to be used?
No. The manual thumb safety is ambidextrous and can be left in the “fire” position (down) if you prefer. The pistol also features a striker safety and a disconnector, providing standard internal safeties common to modern striker-fired designs.
Where can I buy a New P322 online?
You can purchase the New P322 right here at Miamishooterssupply (miamishooterssupply.com). We are an authorized retailer, and the pistol is in stock, ready for fast, discreet shipping to your local FFL.
What is the barrel length and overall size?
The P322 features a 4-inch barrel and an overall length of 7.1 inches. Its size and weight (17.1 oz unloaded) make it comparable to a compact centerfire pistol, providing a realistic training feel without being overly large or heavy for a .22.
✅ In stock — ready to ship today
✅ Same-day shipping from Boise, ID
✅ Discreet packaging
✅ 30-day returns (unfired, in original condition)
✅ Secure checkout
Ready for a .22 LR pistol that gets the details right? The New P322 bridges the gap between affordable plinking and serious training. With its high capacity, optics-ready slide, and Sig Sauer ergonomics, it’s built for shooters who value their time and want a rimfire that performs. Click add to cart to get yours shipped from our Boise warehouse.
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About this review: This assessment is based on hands-on evaluation, technical specifications, and market analysis by Cody Ramirez, E-Commerce Director at Miamishooterssupply. Our goal is to provide detailed, practical information to help DIY enthusiasts and shooters make informed purchasing decisions. We focus on the mechanics, compatibility, and real-world application of the products we sell.
Last updated: March 2026


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