First Look: Rival Arms Slide Kits for SIG P320 & P365

posted on August 4, 2020

Rival Arms is known for making modular pistol components for do-it-yourself firearm enthusiasts. Now the company has announced a new line of match-grade barrels, optics-ready slides, guide rods and slide-completion kits for SIG Sauer P320 and P365 pistols.

The first offerings are standard and threaded barrels for the SIG Sauer P365, P365 XL, P320 Carry, P320 full size, and P320 X5 pistols. The barrels begin with a stainless-steel billet to deliver maximum durability and then are precisely milled using CNC machines to exacting tolerances to ensure the greatest possible accuracy. The barrels are then treated with a PVD coating in black or gold which provides exceptional wear and corrosion resistance. Threaded barrels also come with 1/2-28 threads for use with popular aftermarket suppressors and compensators, along with a color-matching thread protector for use without muzzle devices. 

The Rival Arms slides for the P365 and P320 Full Size and Carry are CNC-machined from 17-4PH stainless steel billet. The milled slides are then QPQ thermo-chemical case hardened to deliver maximum strength, corrosion resistance, and durability. The slides also feature robust serrations and window cuts to enhance operational performance and appearance.

As an added bonus, these new slides are shipped from Rival Arms with either an RMR cut or other cut suitable for a range of popular handgun optics such as Docter, Noblex, TruGlo, Vortex, Burris or similar optic.

Also available from Rival Arms is a slide completion kit for SIG Sauer P320 and P365 that includes every part needed to assemble the internal workings of your new slide. In addition to this, stainless steel and tungsten high-performance guide rod assemblies are also available for the P365 and P365 XL models.

For more information on SIG Sauer P365 and P320 upgrades and other precision-manufactured handgun components and accessories from Rival Arms, please visit


Mesa tactical shotshell holder
Mesa tactical shotshell holder

First Look: Mesa Tactical Sureshell Carrier with RMR Mount

Mount a red dot to your shotgun and keep your spare shotgun ammo close at hand.

The Best of the Blowbacks: Mauser HSc and the Heckler & Koch Model 4

In the April 2022 issue of Shooting Illustrated, this column looked at my all-time favorite carry gun, the Colt Model M or 1903/1908. This month we look at my favorite European semi-automatic, the Mauser HSc and its cousin, the Heckler & Koch Model 4.

Wilson Acquires New Ultralight Arms

The bolt-action rifle manufacturer joins other companies such as Lehigh Defense and Chip McCormick Customs.

First Look: New FN 15 DMR Rifles from FN America

New Geissele triggers, SureFire muzzle devices and hybrid barrel profies are just some of the upgrades.

First Look: Bond Arms Grizzly

Packing the power of either .45 Colt or .410-bore shotshells in a pint-sized package.

Developing Good Shooting Habits

Consistency and repetition are the keys to building on-demand skills.


Get the best of Shooting Illustrated delivered to your inbox.