Rival Arms RA20P002E Precision 9mm Drop-In Barrel, 3.10" Gold PVD, Threaded, 4340H Steel for Sig P365

The Rival Arms RA20P002E Precision 9mm drop-in barrel brings match-grade accuracy and durability to your Sig P365 compact carry gun. Built from 4340H steel and finished in gold PVD for corrosion resistance, this 3.10" threaded barrel swaps in without gunsmithing—if you can field-strip your P365, you can install this. It's the kind of upgrade that appeals to shooters who want tighter groups at the range, the flexibility of suppressor-ready threading, or simply the confidence of a precision-manufactured component from a brand that understands what P365 owners demand.

The threaded design opens up suppressor options for shooters who run cans on their compacts, while the gold PVD coating adds both toughness and visual appeal. Drop-in barrels like this one are popular for those who want to optimize a factory P365 without a trip to the gunsmith—keep your original barrel as a backup, swap to the Rival for dedicated range sessions or suppressed shooting, then switch back anytime. The 3.10" length maintains the P365's compact profile and holster compatibility.

Rival Arms barrels are known for holding tight tolerances and delivering the kind of fit-and-finish you'd expect at this quality level. If you're running a Sig P365 and want a precision alternative to the factory tube, this is worth a serious look.

Key Features

• Match-grade precision 9mm barrel, purpose-built for Sig P365
• 4340H steel construction for strength and longevity
• Gold PVD coating resists corrosion and wear
• Threaded design accommodates 9mm suppressors
• Drop-in installation—no gunsmithing required
• 3.10" length preserves compact profile and holster fit

Specifications

Frequently Asked Questions

Will this barrel work with my Sig P365 without fitting?

Yes. This barrel is designed as a drop-in for the P365—no gunsmithing or fitting is required. If your P365 is in good condition, installation is a straightforward swap.

Can I use this threaded barrel with a suppressor?

Yes. The RA20P002E is threaded and ready for 9mm suppressors. Check your specific suppressor's thread pitch and diameter to confirm compatibility.

What's the difference between this and the factory P365 barrel?

This Rival Arms barrel is match-grade, built to tighter tolerances for precision shooting. The gold PVD finish is more durable than many factory finishes, and the threaded design gives you suppressor compatibility. You're paying for tighter quality control and enhanced durability.

Can I swap barrels between my P365 and the original factory barrel?

Yes. Since this is a drop-in design, you can keep your factory barrel as a backup and switch between them as needed—though we'd recommend doing so at home rather than at the range.