The Loadout Blog

Firearms|Handguns

Rival Arms is a company primarily known for making premium aftermarket Glock parts such as slides and barrels. Now, Rival Arms seeks to expand to the popular and expanding SIG SAUER P320 and P365 aftermarket scenes. On Monday, Rival Arms announced in a press release that they will begin offering products for the SIG SAUER P320 and P365 platforms. Those products would include slides, barrels, guide rods, and kits for both SIG platforms.

Below is the press release from Rival Arms on offering SIG P320 and P365 pistol upgrades.

Press Release

Dallas, TX – Rival Arms, manufacturer of high-quality, modular pistol components for do-it-yourself firearm enthusiasts, proudly announces their line of match-grade barrels, optic ready slides, guide rods, and slide completion kits for Sig Sauer® P320 and P365 firearms.
Rival Arms is quickly being recognized by firearm enthusiasts as the leading brand of quality aftermarket performance components. As the company expands its product line with multiple Sig Sauer platform options, the goal remains the same — to manufacture handgun components that exceed factory standards in material construction, precision tolerances, and durability.

Rival Arms will offer standard and threaded barrels for the Sig Sauer P365, P365 XL, P320 Carry, P320 Full Size, and P320 X5 pistols. All Rival Arms barrels start with a stainless-steel billet to deliver maximum durability and are then precision CNC-machined to exacting tolerances to ensure the greatest possible accuracy before being treated with a PVD coating. This coating provides exceptional wear and corrosion resistance and is available in black or gold colors. Threaded barrels come with 1/2-28 threads for use with popular aftermarket suppressors and compensators. A color-matching thread protector is included for use without muzzle devices.

Barrel Model Handgun Platform Muzzle Type Color

RA20P501A P320 X5 STANDARD BLACK
RA20P501E P320 X5 STANDARD GOLD
RA20P401A P320 FULL SIZE STANDARD BLACK
RA20P401E P320 FULL SIZE STANDARD GOLD
RA20P301A P320 CARRY STANDARD BLACK
RA20P301E P320 CARRY STANDARD GOLD
RA20P302A P320 CARRY THREADED BLACK
RA20P302E P320 CARRY THREADED GOLD
RA20P101A P365 XL STANDARD BLACK
RA20P101E P365 XL STANDARD GOLD
RA20P001A P365 STANDARD BLACK
RA20P001E P365 STANDARD GOLD
RA20P002A P365 THREADED BLACK
RA20P002E P365 THREADED GOLD

The Rival Arms slides for the P365 and P320 (Full Size and Carry available) are CNC-machined from 17-4PH stainless steel billet and QPQ thermo-chemical case hardened to deliver maximum strength, corrosion resistance, and durability. Robust serrations and window cuts enhance operational performance and appearance. For those intending to use optics, the Rival Arms slides come ready with either an RMR® cut or “other” cut suitable for a range of popular handgun optics (Docter®/Noblex®, TRUGLO®, Vortex®, Burris®, etc.)

Slide Model Fit Optic

RA10P401A P320 FULL SIZE RMR®
RA10P402A P320 FULL SIZE OTHER OPTIC
RA10P301A P320 CARRY RMR®
RA10P302A P320 CARRY OTHER OPTIC
RA10P001A P365 N/A

Slide completion kits for Sig Sauer® P320 and P365 are available from Rival Arms and include every part needed to assemble the internal workings of your new slide.

Kit Model Fit

RA42P001A P320
RA42P002A P365

Stainless steel and Tungsten High-performance guide rod assemblies are also available for the P365 and P365 XL models.

Guide Rod Model Fit Rod Material

RA50S101S P365 STAINLESS STEEL
RA50S101T P365 TUNGSTEN
RA50S111S P365 XL STAINLESS STEEL
RA50S111T P365 XL TUNGSTEN

For more information on Sig Sauer P365 and P320 upgrades and other Rival Arms precision-manufactured handgun components and accessories, visit rival-arms.com.

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