Description
SIG SAUER 9MM P320 NITRON 4.7IN 17 RND MAG
SIG SAUER 9MM P320 NITRON 4.7IN 17 RND MAG
The SIG SAUER P320 Nitron Full-Size 9mm (4.7″, 17-round) is the original full-size configuration of the modular P320 series. It is a striker-fired, semi-automatic pistol with a 4.7-inch barrel, Nitron-coated stainless-steel slide, and a standard 17-round magazine where legally permitted. The P320 platform is notable for its removable stainless-steel fire control unit (FCU), which is the serialized component and allows the grip module, slide, and barrel to be changed to different configurations.
Specifications
| Feature | Specification |
|---|---|
| Manufacturer | SIG SAUER |
| Model | P320 Nitron Full-Size |
| Caliber | 9×19mm (9mm Luger) |
| Action | Striker-fired, semi-automatic |
| Barrel Length | 4.7 in (119 mm) |
| Overall Length | 8.0 in (203 mm) |
| Height | 5.5 in (140 mm) |
| Width | 1.3–1.4 in |
| Weight | Approximately 29.5 oz (with magazine) |
| Magazine Capacity | 17+1 rounds (where legally permitted) |
| Frame | Polymer grip module with stainless-steel FCU |
| Slide | Stainless steel with Nitron finish |
| Rail | M1913 Picatinny accessory rail |
Key Features
- Striker-fired trigger with a consistent pull for every shot.
- Modular design: the serialized FCU can be moved into different compatible grip modules and slide assemblies.
- Nitron finish on the stainless-steel slide for corrosion and wear resistance.
- Interchangeable grip modules available in different sizes to better fit different hand sizes.
- Accessory rail for compatible lights or lasers.
- Typically equipped with SIGLITE night sights or contrast sights, depending on the specific package.
Trigger System
The P320 uses a partially pre-tensioned striker-fired mechanism:
- Consistent trigger pull from the first shot to the last.
- Typical factory trigger pull of approximately 5.5–7.5 pounds.
- Short, tactile trigger reset that many shooters find easy to manage.
Dimensions
| Measurement | Value |
|---|---|
| Barrel | 4.7 in |
| Overall Length | 8.0 in |
| Height | 5.5 in |
| Width | 1.3–1.4 in |
| Weight | ~29.5 oz (with magazine) |
Magazine Capacity
The standard full-size model is supplied with 17-round magazines in jurisdictions where they are legal. In states with magazine-capacity restrictions, it may be sold with reduced-capacity magazines.
Safety Features
The P320 incorporates several internal safeties, including:
- Striker safety.
- Disconnect safety mechanisms.
- Internal safety system designed to prevent firing unless the trigger is intentionally pressed.
Some variants are also available with a manual thumb safety, but the standard Nitron Full-Size model generally does not include one.
Accuracy and Handling
The full-size configuration offers:
- A longer sight radius than compact models.
- Mild recoil due to its size and weight.
- Good practical accuracy for recreational target shooting, competition, or defensive use where lawful.
Typical Package Contents
Depending on the retailer and region, the pistol commonly includes:
- SIG SAUER P320 Nitron Full-Size pistol.
- Two or three magazines (capacity varies by market).
- Cable lock.
- Owner’s manual.
- Hard case.
Advantages
- Modular platform with extensive aftermarket support.
- Reliable striker-fired operating system.
- Full-size grip provides excellent control for many shooters.
- Accessory rail for mounting compatible lights or lasers.
- Compatible with a wide range of P320 grip modules and slide assemblies due to the FCU design.
Considerations
- The full-size grip and 4.7-inch barrel make it larger than compact or subcompact P320 variants, which may be less convenient for concealed carry.
- Many newer P320 variants (such as the X-Series) include factory optics cuts and upgraded triggers, while the standard Nitron model is a more traditional configuration.
Comparison to Other P320 Models
| Feature | P320 Nitron Full-Size | P320 Compact | P320 M17 |
|---|---|---|---|
| Barrel | 4.7 in | 3.9 in | 4.7 in |
| Magazine | 17 rounds | 15 rounds | 17 rounds (plus additional magazines in many packages) |
| Grip | Full-size | Compact | Carry-size |
| Optics Ready | Usually no | Usually no | Yes |
| Manual Safety | Typically no | Typically no | Yes (commercial M17) |

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