The KelTec CP33 is a semi-automatic, hammer-fired .22 LR pistol that redefined rimfire capacity with its innovative quad-stack 33-round magazine—and even higher 50-round extensions available.
Built with a polymer frame, aluminum receiver blocks, and a 5.5-inch threaded barrel, the CP33 balances accuracy, modularity, and lightweight handling. Its full-length Picatinny rail and M-LOK forend slots make it a highly customizable platform for optics and accessories, while the ambidextrous controls, fiber optic sights, and exceptionally low recoil make it accessible for both beginners and advanced shooters.
Designed more as a competition and recreational pistol than a defensive one, the CP33 delivers rimfire precision and sheer fun in an ergonomically refined package.
Why did KelTec create the CP33, and who is it for?
The KelTec CP33 emerged from the company’s long tradition of innovation in firearm engineering. Known for designs like the PMR30 and SUB2000, KelTec CNC Industries, Inc., based in Cocoa, Florida, has built a reputation for unconventional yet highly functional firearms. The CP33 (the “CP” standing for Competition Pistol and the “33” referencing its magazine capacity) was designed to push the boundaries of what a rimfire handgun could be.
Released in 2015, it targeted competitive shooters, rimfire enthusiasts, and trainers seeking a lightweight, accurate, and modular platform. While too large for concealed carry, it excels as a range, training, or competition gun, offering extremely low recoil and precision unmatched in its category.
“It’s hard not to grin when you have 33 rounds of .22 LR at your fingertips,” wrote one RimfireCentral reviewer, capturing the pistol’s signature appeal: high capacity meets pure shooting enjoyment.
What are the specifications of the KelTec CP33?
Core Technical Data
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Caliber: .22 Long Rifle (LR)
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Action: Hammer-fired, semi-automatic
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Barrel Length: 5.5 inches (139.6 mm)
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Overall Length: 10.6 inches (269 mm)
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Height: 6.0 inches (152 mm)
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Width: 1.7 inches (43 mm)
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Unloaded Weight: 25.5 ounces (723 grams)
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Magazine Capacity: 33+1 rounds (standard), optional 50-round extended magazines
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Frame Material: Polymer with internal aluminum receiver
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Sights: Adjustable fiber optic (front and rear)
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Safety: Ambidextrous manual safety levers
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Accessory Rails: Full-length top Picatinny rail, M-LOK slots on forend
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Barrel Thread: 1/2x28 (suppressor-ready)
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Manufacturer: KelTec CNC Industries, USA
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Year Introduced: 2015
This pistol is a mechanical marvel for a rimfire handgun. Its quad-stack magazine and modular build make it as much a technological showcase as a competition tool.
How does the KelTec CP33’s design and build quality stand out?
Frame and Construction
KelTec built the CP33 around a polymer frame reinforced by internal aluminum receiver blocks, giving it rigidity while keeping it light. The fit and finish are consistent with other KelTec products—utilitarian but surprisingly durable. The design uses a clamshell-style assembly, which simplifies cleaning and maintenance once disassembled.
Ergonomics and Handling
Despite its large footprint, the grip design is comfortable and well-angled, providing a natural point of aim. The textured grip panels and high beavertail promote good control even during rapid fire. Its balance is excellent—much of the weight sits over the hand, reducing muzzle rise.
Controls
The CP33 is fully ambidextrous, featuring mirrored manual safeties, magazine releases, and a rear-mounted charging handle. These controls feel intuitive for both left- and right-handed shooters. The mag release is paddle-style at the base of the trigger guard, ensuring deliberate activation.
Accessory Compatibility
The top Picatinny rail spans nearly the entire length of the pistol, allowing the mounting of red dot optics, scopes, or reflex sights. The M-LOK slots on the forend enable additional accessories such as lights or lasers—rare for a rimfire handgun.
What are the KelTec CP33’s variants and comparable models?
Variants
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KelTec CP33 Standard: The base model, with a 33-round flush magazine, 5.5-inch threaded barrel, and optics-ready rails.
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CP33 with 50-Round Mag Extension: Optional extended magazine, not a separate SKU but commonly configured aftermarket.
Comparable Models
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KelTec PMR30: The CP33’s .22 Magnum sibling, also focused on high capacity (30 rounds) and lightweight design.
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Ruger Mark IV Tactical: Known for superior triggers and precision machining, but lower magazine capacity (10 rounds).
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Smith & Wesson SW22 Victory: Excellent target pistol with similar barrel length, but again, only 10-round capacity.
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Taurus TX22 Competition: Modern .22 LR with optics support, offering 16-round mags and strong ergonomics.
The CP33’s capacity, modularity, and rail system make it unique—more tactical and futuristic than most rimfire competitors.
How does the KelTec CP33 perform on the range?
Accuracy
The CP33 delivers exceptional accuracy for a .22 LR pistol. Its long barrel, generous sight radius, and crisp trigger allow for sub-2-inch groups at 25 yards, and many shooters have reported hits at 100 yards with optics. The fiber optic sights glow brightly under daylight and are fully adjustable, ensuring precise zeroing.
Recoil and Control
Recoil is virtually nonexistent. Even during rapid-fire strings, the pistol barely moves, making it ideal for new shooters, training, or competition. The low bore axis and neutral balance make fast follow-up shots effortless.
Reliability
Reliability is where user technique matters. When loaded correctly—each rim staggered to prevent rimlock—the CP33 runs smoothly, even across hundreds of rounds. However, improper loading or low-quality ammunition can lead to feeding issues. Many owners recommend a KelTec speed loader to ensure consistent magazine performance.
Trigger Quality
The trigger is a highlight: crisp, light, and breaking around 4 pounds, with minimal overtravel. It has a short, tactile reset—unusual for rimfire pistols and ideal for precision or speed shooting.
User note: “The KelTec CP33 enjoys a cult following among rimfire pistol enthusiasts and competition shooters primarily for its unparalleled high-capacity magazines (33 rounds standard) and exceptional mechanical accuracy. Verified user reviews and firearm community discussions highlight that the CP33’s long 5.5-inch barrel and generous sight radius provide excellent precision uncommon in .22 LR pistols, making it suitable even for 100-yard shooting.”
What ammunition works best in the KelTec CP33?
Recommended Loads
The CP33 runs best with high-velocity, clean-burning .22 LR ammunition. Consistency in cartridge dimensions and powder loads is crucial for the quad-stack feeding system.
Top Choices:
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CCI Mini-Mag 40gr CPRN – clean, powerful, and reliable cycling.
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Federal AutoMatch 40gr Solid – consistent ignition and solid accuracy.
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Aguila Super Extra 38gr HP – excellent for range and steel shooting.
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Winchester M22 – bulk pack option that performs well with proper cleaning intervals.
Ammo to Avoid
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Subsonic or low-velocity rounds can cause stovepipes or failure to eject.
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Cheap bulk rimfire with inconsistent rim thickness often causes rimlock or feed issues.
How suitable is the KelTec CP33 for different use cases?
Is the KelTec CP33 good for concealed carry?
No. The CP33’s 10.6-inch length and 6-inch height make it too large for concealment. It’s not a defensive pistol—it’s a range and competition tool.
Is the CP33 viable for home defense?
While .22 LR is not ideal for defense, the CP33’s minimal recoil and 33-round capacity could make it a last-resort home defense option. However, its rimfire reliability and ammo sensitivity mean it’s better suited for recreation or training.
Is the CP33 suitable for competition or target shooting?
Absolutely. Designed as a competition pistol, the CP33 excels in Steel Challenge, Rimfire Challenge, and other accuracy-based disciplines. Its light trigger, modular rails, and capacity give it a strong advantage for speed and precision events.
Is the CP33 good for training or outdoor shooting?
Yes. Its negligible recoil and affordable ammo make it a perfect training pistol for new shooters. Outdoorsmen also value it as a trail gun for small-game hunting or as a compact plinker to carry in a pack or saddlebag.
What are the best holsters for the KelTec CP33?
Holsters for the KelTec CP33 are designed to support its long barrel and accessory-ready frame. Each KelTec CP33 holster below is molded from durable Boltaron polymer for retention and durability.
Cloak Tuck 3.5 IWB Holster
This IWB holster provides discreet carry for the CP33, balancing comfort and concealment under a jacket or vest. Adjustable cant and ride height ensure personalized fit.
OWB Paddle Holster
Quick to don and remove, the OWB paddle holster is perfect for range training or competition use. It allows a fast draw while maintaining excellent retention.
Swivel Drop Leg Holster
This tactical-style holster positions the CP33 comfortably on the thigh, keeping it accessible even when wearing gear or a chest rig.
Chest Holster
Ideal for outdoor shooters or hunters, this chest rig keeps the pistol readily available without interfering with backpacks or harnesses.
What are the pros and cons of the KelTec CP33?
Pros
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Massive 33+1 round capacity (50+ with extensions)
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Excellent accuracy for a rimfire pistol
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Low recoil and easy handling
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Optics-ready and highly modular
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Ambidextrous controls and intuitive ergonomics
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Suppressor-ready threaded barrel
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Clean, crisp trigger
Cons
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Difficult magazine loading (rimlock risk)
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Fragile magazines and limited aftermarket supply
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Large size for a pistol
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Occasional feed issues with cheap ammo
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Not suitable for concealed carry or defensive use
What’s the final verdict on the KelTec CP33?
The KelTec CP33 is one of the most innovative rimfire pistols ever produced. With its unmatched capacity, exceptional accuracy, and customization potential, it redefines what a .22 LR handgun can be. It’s not designed for defense—it’s designed for precision, plinking, and pure fun.
Once you learn its quirks—especially magazine loading—it becomes a remarkably reliable and enjoyable firearm. Its modularity makes it equally appealing to competitive shooters, trainers, and enthusiasts who appreciate design ingenuity.