Sig Sauer Recoil Spring Assembly for P320 Full Size 9mm Pistols - OEM Factory Replacement (RSA-320F-9)

Restore Factory Performance with the Sig Sauer RSA-320F-9 Recoil Spring Assembly

Keep your Sig Sauer P320 Full Size 9mm pistol running at peak reliability with the genuine OEM RSA-320F-9 Recoil Spring Assembly. This factory replacement part is engineered specifically for the P320 Full Size (including M17 variants) chambered in 9mm Luger. It delivers consistent slide cycling, smooth recoil management, and dependable feeding with all standard 9mm ammunition.

Over time, recoil springs can lose tension from high round counts or extended use. Replacing your recoil spring assembly with this authentic Sig Sauer component restores original factory timing, reduces felt recoil, and helps prevent malfunctions. The captured dual-spring design installs quickly as a drop-in unit, making routine maintenance simple for any owner.

Key Features and Benefits

• OEM Factory Part - Exact match for Sig Sauer P320 Full Size 9mm models with 4.7-inch barrels
• Precise Specifications - Recoil spring length of 3.81 inches (97 mm) for perfect fit and function
• Captured Assembly - Easy drop-in installation with no special tools required
• Black Finish - Durable, corrosion-resistant coating for long service life
• Improved Reliability - Maintains proper slide velocity and helps ensure consistent ejection and feeding

Whether you are performing scheduled maintenance, rebuilding after heavy use, or simply want peace of mind with factory-original parts, the RSA-320F-9 is the correct choice for your P320 Full Size 9mm. Proudly compatible with standard P320 Full Size, X-Full, and M17 platforms in 9mm only.

Note: This assembly is designed exclusively for 9mm Luger Full Size models. It is not compatible with compact, subcompact, or .40 S&W / .357 SIG / .45 ACP variants.

Perfect For

Law enforcement professionals and responsible gun owners who demand genuine Sig Sauer parts for their modular P320 platform.  

Commonly Asked Questions

1. What models does the RSA-320F-9 Recoil Spring Assembly fit? This assembly is designed specifically for Sig Sauer P320 Full Size pistols chambered in 9mm Luger, including standard Full Size, X-Full, and M17 variants with 4.7-inch barrels. It is not compatible with compact or subcompact models.

2. How do I know when it is time to replace my P320 recoil spring? Signs include increased felt recoil, failures to eject, stovepipes, or sluggish slide movement. Most owners replace the recoil spring assembly every 5,000 to 10,000 rounds or if the pistol has been in storage for extended periods.

3. Is this a complete captured assembly or just the spring? It is a complete captured recoil spring and guide rod assembly, ready to drop into your P320 slide for quick and easy installation.

4. Will this recoil spring assembly work with aftermarket compensators or threaded barrels? It performs best with factory or compatible 4.7-inch barrels. Heavier aftermarket setups may require tuning or a different spring weight. Always test function with your specific configuration.

5. Is installation difficult for a beginner? Installation is straightforward for most users. Field strip the pistol, remove the old assembly, insert the new one, and reassemble. If you are unsure, consult your owner's manual or have a qualified armorer perform the service.