Pistol · SAAMI
.32 NAA
The .32 NAA is a necked-down .380 ACP case firing a .32-caliber (.312") bullet, developed jointly by North American Arms and Cor-Bon in 2002.
- Caliber
- 0.3129″ · 7.948 mm
- Introduced
- 2002
- Case
- Rimless
- Parent
- .380 ACP
- Primary use
- self_defense, concealed_carry
- Status
- Limited
- Introduced
- 2002
- Type
- Pistol
- Origin
- United States
- Inventor
- North American Arms, Cor-Bon
- Manufacturer
- Cor-Bon, North American Arms
- Standard
- SAAMI
- Status
- Limited
- Availability
- Rare
- Case capacity
- 8 gr H₂O
- Twist (typical)
- 1:16
- Primer
- Small Pistol
- Case type
- Rimless
- Max pressure
- 25,700 psi
- Eff. range
- 25 yd
- Recoil
- 1.5–3 ft·lb
- Subsonic
- Capable
Ballistics
Published velocity/energy data isn't available for .32 NAA. Parent case: .380 ACP.
Performance
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
SAAMI · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 7.95 | 0.313 | ~ |
| Neck ⌀ | 8.55 | 0.336 | · |
| Shoulder ⌀ | 9.47 | 0.373 | · |
| Shoulder angle | — | — | |
| Base ⌀ | 9.50 | 0.374 | · |
| Rim ⌀ | 9.50 | 0.374 | · |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.14 | 0.045 | · |
| Neck length | — | — | |
| Case length | 17.27 | 0.680 | · |
| Overall length | 24.99 | 0.984 | · |
Size vs familiar rounds
Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. .32 NAA is highlighted below.
Missing a dimension for .32 NAA? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.
Factory loads
Being verified
Advertised FPS, energy, and BC are withheld until loads clear verification.
Reloading costestimate cost per round vs factory
Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.
Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.
Firearms chambered in .32 NAA
4 models in the database chamber .32 NAA. Browse all →
Lineage
Connected reference
History
North American Arms, makers of mini revolvers and the Guardian pocket pistol, sought a cartridge for a very compact single-stack pistol that would outperform .32 ACP while fitting in a platform too small for .380 ACP. The .32 NAA uses a .380 ACP case necked down to .32 caliber, allowing the Guardian pistol to be chambered for a ballistically superior round while using a narrower barrel. Cor-Bon developed the initial loading. Commercial adoption has been minimal — only NAA Guardian pistols were made for it.
FAQs
- What twist rate does .32 NAA use?
- .32 NAA typically uses a 1:16 twist rate.
- What bullet diameter is .32 NAA?
- .32 NAA uses a 0.3129″ (7.948 mm) diameter bullet.
- Is .32 NAA still in production?
- .32 NAA is limited; typical availability is rare.
- What is .32 NAA used for?
- .32 NAA is primarily used for self_defense, concealed_carry.
- What is .32 NAA based on?
- .32 NAA is derived from the .380 ACP case.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 19 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →