Sig Sauer P322 .22 LR 4″ Optic-Ready Pistol, 2x20rd

About this product

The Sig Sauer P322 is a 4-inch barreled, polymer-framed .22 LR pistol designed specifically as an optic-ready, high-capacity training and plinking platform that ships with two 20-round magazines. Built by Sig Sauer, it represents a direct, modern interpretation of a .22 LR trainer with features typically reserved for centerfire defensive pistols. My evaluation focuses on its mechanical execution and its specific utility within a structured training or recreational shooting regimen.

What is the Sig Sauer P322 used for?

The P322 is primarily used for high-volume, low-cost marksmanship training, suppressor familiarization, and introducing new shooters to semi-automatic pistol mechanics. Its 20-round magazine capacity allows for extended range sessions without constant reloading, while its 4-inch barrel and 17.1-ounce weight create a handling profile similar to many compact 9mm pistols. The included threaded barrel adapter and SHIELD/RMSc optic cut make it an immediate platform for testing suppressors and red dot sights, provided you comply with all NFA regulations—which, in my experience, is where most private owners trip up on paperwork.

How does the Sig Sauer P322 compare to the Taurus TX22?

The Sig Sauer P322 offers superior out-of-the-box optic readiness, while the Taurus TX22 provides better magazine value and a slightly more proven track record for sheer reliability with bulk-pack .22 LR ammunition. The P322 ships ready for a micro red dot, a feature you must pay extra to add to the TX22, but the TX22 typically comes with two 16-round magazines and is renowned for feeding the cheapest ammunition reliably—a critical factor for a training tool where ammo cost per round is the primary advantage. For a shooter whose priority is optic-based training from day one, the P322 is the better choice; for someone who prioritizes absolute ammunition tolerance and lowest cost-of-entry, the TX22 remains a formidable, and often more reliable, alternative.

What does it weigh and what are the dimensions?

The pistol weighs 17.1 ounces (485 grams) empty and measures 7.1 inches in overall length, 5.5 inches in height with a magazine inserted, and 1.3 inches in width across the slide. That 17.1-ounce weight is significant—it's over 3 ounces heavier than a standard Ruger Mark IV 22/45 Lite, which gives it a more substantial, duty-pistol-like feel in the hand rather than the featherweight impression of a dedicated target .22. The dimensions place it squarely in the compact pistol category, making it compatible with many holsters designed for similarly sized 9mm models, a practical benefit for dry-fire or holster-work practice.

Who is this NOT for?

This pistol is not for the shooter seeking a traditional, all-steel .22 target pistol for bullseye competition or the absolute pinnacle of mechanical accuracy. Its polymer frame and striker-fired system incorporate more flex and a different trigger feel than a bolt-action or single-shot .22 rifle like the Stevens 334 in .243 Win, which is built for sub-MOA precision. If your primary goal is punching the smallest possible groups at 50 yards, invest in a dedicated target platform. The P322 is also a poor choice for someone unwilling to perform basic maintenance; .22 LR is notoriously dirty, and the high-capacity magazine requires disciplined cleaning to function over the long term.

What's in the box?

You receive the optic-ready pistol, two 20-round polymer magazines, a threaded barrel adapter (½"-28 thread pitch), interchangeable flat and curved trigger shoes, a cable lock, and the owner's manual. The inclusion of two 20-round magazines is a major functional benefit, providing 40 rounds of ready capacity before needing to reload—a feature that directly supports longer, more productive training strings. Notably, the optic mounting plate and screws for a SHIELD/RMSc pattern red dot are also included, meaning you can mount an optic immediately without ordering additional parts.

Is the Sig Sauer P322 worth it at $439.99?

At $439.99, the P322 is worth the investment for the shooter who specifically wants an optic-ready, high-capacity .22 LR trainer that mirrors the manual-of-arms of a modern striker-fired pistol. You are paying a premium for the Sig Sauer name and the integrated optic system, which saves you roughly $80-120 compared to having a slide milled later. For a pure plinking pistol where a red dot isn't a priority, a Taurus TX22 or a basic Ruger Mark IV offers similar core functionality for about $100 less. Consider the P322 as a dedicated training tool—its value is realized over thousands of rounds of cheaper .22 LR practice that improves your skills with your primary centerfire pistol, like moving from a Stevens 555 over/under shotgun to a semi-auto for clays.