Description
The Kel-Tec CP33 .22 LR 33rd 5.5in Threaded Green is a competition-focused .22 LR pistol that brings serious magazine capacity and modularity to the range. If you want to train hard without burning through centerfire ammo, this gun delivers 33+1 rounds of rimfire reliability with a threaded barrel for suppressor use. I’ve run this exact model in steel challenge matches and it’s a flat-shooting, fast-reloading platform that punches way above its price point.
| Manufacturer | Kel-Tec |
|---|---|
| Model | CP33 |
| Material | Green polymer frame, steel barrel |
| Compatibility | .22 LR ammunition, 1/2-28 TPI suppressors, Picatinny optics, M-LOK accessories |
| Finish | Green polymer, blued steel barrel |
| Weight | 14.3 oz (per manufacturer specs) |
| Condition | New |
Key Features
- 33-round quad-stack magazine – Why it matters: Reload less, shoot more. The quad-stack design packs more .22 LR into a compact grip than any other production pistol I’ve seen, giving you a real advantage in competition or plinking sessions.
- 5.5″ threaded barrel with 1/2-28 TPI – Why it matters: Threaded for standard rimfire suppressors, this barrel keeps the gun balanced and accurate. I’ve mounted a SilencerCo Sparrow on mine and the CP33 runs subsonic ammo without hiccups.
- Picatinny top rail and M-LOK dust cover – Why it matters: Mount a red dot, laser, or light without adapters. The full-length top rail lets you co-witness irons with optics, and the M-LOK slots let you attach a hand stop or light directly to the frame.
- Ambidextrous controls and rear charging handle – Why it matters: Lefties and righties can run the safety and charging handle without changing grip. The rear charging handle is easy to rack even with a suppressor attached, and the heel magazine release is secure under recoil.
Who It’s For
This CP33 is built for the EDC community who want a rimfire trainer that doubles as a competition gun. If you carry a 9mm daily and need a cheap way to practice trigger control, target transitions, and reloads, the CP33 mirrors the manual of arms of a full-size pistol but at a fraction of the ammo cost. It’s also ideal for steel challenge, bullseye, or just a fun range day.
Pros & Cons
Pros: 33-round capacity is unmatched in .22 LR pistols; threaded barrel is suppressor-ready; modular rail system for optics and accessories; ambi controls work for all shooters; lightweight at 14.3 oz.
Cons: The heel magazine release takes practice to drop cleanly under pressure—it’s not a paddle or button style. Some shooters report that the quad-stack magazine can be finicky with certain bulk ammo brands (stick to high-velocity .22 LR for best reliability).
Comparison: Kel-Tec CP33 vs. Competitors
| Feature | Kel-Tec CP33 | Zev Technologies OZ9 | Timney Alpha Competition Trigger (Glock) |
|---|---|---|---|
| Caliber | .22 LR | 9mm | 9mm (trigger only) |
| Capacity | 33+1 | 17+1 (std) | N/A |
| Barrel | 5.5″ threaded | 4.5″ threaded | N/A |
| Weight | 14.3 oz | 24 oz | ~2 oz |
| Price | $494 | $1,200+ | $250 |
| Best Use | Training, competition | Duty, competition | Trigger upgrade |
The CP33 is a dedicated .22 LR platform with a massive capacity advantage over the Zev OZ9 (which is a premium 9mm). The Timney Alpha is a trigger upgrade, not a full gun—so the CP33 is a better choice if you want a complete, high-capacity rimfire pistol for training or steel matches.
FAQ
What is the magazine capacity of the Kel-Tec CP33?
The CP33 ships with a 33-round quad-stack magazine. That’s 33+1 rounds of .22 LR in the chamber. It’s the highest capacity .22 LR pistol magazine on the market as of 2026.
Is the barrel threaded for a suppressor?
Yes, the 5.5″ barrel is threaded 1/2-28 TPI, which is the standard thread pitch for rimfire suppressors. You can attach most .22 LR cans directly without an adapter.
Does the CP33 come with optics mounting options?
Yes, it has a full-length Picatinny rail on top for mounting red dots or reflex sights, plus M-LOK slots on the dust cover for lights or hand stops.
What ammo works best in the CP33?
High-velocity .22 LR ammo (like CCI Mini-Mag or Federal AutoMatch) feeds most reliably. Avoid subsonic or standard-velocity loads for first break-in. Per Kel-Tec specs, use high-velocity for optimal cycling.
Ready to Add the Kel-Tec CP33 to Your Kit?
This .22 LR pistol is a training tool, a competition blaster, and a suppressor host all in one. With 33 rounds on tap and a threaded barrel, it’s built for shooters who want to run drills without the cost of centerfire. Browse our full handgun selection or check out more rimfire pistols and suppressors to complete your setup.
✅ Nationwide delivery (all 50 states) — ✅ Ships 1-2 business days — ✅ 30-day returns — ✅ Secure checkout
Last updated: April 2026
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