Custom Sig P320 vs Custom Glock Gen 5

Intro: Perfect Glock vs Perfect Sig Concept

The hosts open by joking about how Glock versus Sig debates dominate the internet and imagine what a “perfect” version of each pistol might look like. They introduce the video as a direct comparison between two highly customized handguns: a “Call of Duty max level” Glock and a heavily upgraded Sig P320. Kai and Jason set the stage for a versus-style breakdown, focusing on real parts choices rather than stock configurations. The goal is to see how far each platform can be pushed while still remaining reliable and practical, then decide how a fully built Glock stacks up against an equally tricked-out Sig P320.

Custom Glock 45 Base, Compensator, and Holster Setup

Ryan presents his custom pistol, which started as a basic Glock 45 with standard iron sights and no MOS cut. The first major upgrade was the Radian Ramjet barrel paired with the Afterburner compensator. He chose this setup because it cycles 115-grain 9mm reliably without needing to tune recoil springs, avoiding common reliability issues seen on compensated pistols. Ryan notes that holster selection for compensated guns can be frustrating, but this configuration allows the gun to fit a Glock 17 holster. Since the Glock 45 uses a Glock 19-length slide on a Glock 17-size frame, the added length from the Radian system effectively matches a Glock 17 profile, simplifying duty-style holster options.

Slide Work, DPM Recoil System, and RMR HD Optic

The Glock’s slide has been significantly reworked. Ryan describes meeting a representative from DPM at IWA 2023 and trying their captured recoil spring system. Initially skeptical, he found it made the slide extremely smooth while remaining reliable across roughly 1,500 to 2,000 rounds. The slide was Cerakoted and milled by Weapon Works in a Vietnam tiger stripe pattern using FDE, black, and OD green. Instead of using Glock’s MOS system, Ryan had the slide directly milled by Geer Works for an RMR footprint to avoid tolerance stacking and extra failure points from plates. The slide features additional serrations and corner cuts rather than window cuts, which he avoids over concerns about debris affecting reliability. The optic is a Trijicon RMR HD, mounted directly to the slide.

Sights, Controls, Trigger, and Frame Stippling on the Glock

The factory polymer Glock sights were replaced with Dawson Precision metal sights. Ryan selected heights that provide a lower one-third co-witness with the RMR HD, keeping the irons visible but minimally intrusive in the optic window. The pistol uses an extended slide release, essentially the style found on Glock 34 and some 17M FBI models, offering more purchase than the flat factory lever while remaining low profile. Internally, the gun runs the Glock Performance Trigger. The hosts explain that a standard Glock safe-action trigger partially cocks the striker during the press, creating the familiar spongy feel. The Performance Trigger changes the geometry so the striker is fully cocked and the trigger primarily releases it, behaving more like a single-action design with a lighter, cleaner break while retaining Glock reliability.

Magwell, Reliability Limits, and Transition to the Sig

Weapon Works also performed hand stippling on the Glock 45 frame, adding texture and double undercuts on the trigger guard. The first undercut raises the firing hand for a higher grip, while the second provides a more natural index point for the support hand. Ryan feels the stippling could be slightly more aggressive but still considers it a clear improvement over the stock frame. A Zev Gen 5 flared magwell was added mainly to match the Sig P320’s factory magwell for a fair comparison, even though Ryan does not usually prefer magwells on carry guns. He notes that the build is at the limit of what he is comfortable changing without compromising reliability and would not add further modifications. With the Glock fully outlined, the hosts bring in John to present a Sig P320 build capable of rivaling Ryan’s pistol.

Sig P320 Spectre Comp Overview and Compensator Design

John introduces his pistol as a Sig Spectre Comp P320 from Sig Custom Works, selected because it closely matches Ryan’s Glock in configuration. Both pistols run compensators, similar weapon lights, comparable optic setups, and flared magwells, making the comparison largely about platform differences rather than accessories. John explains that the Spectre Comp’s compensator is attached differently from the Radian Ramjet and Afterburner system. On the Sig, the compensator is a separate unit that screws into place on the slide, with visible screw points for removal and cleaning. This contrasts with the Glock’s barrel-integrated Ramjet and Afterburner combination, highlighting two distinct approaches to recoil and muzzle rise management on 9mm duty-style pistols.

Slide Cuts, Custom Works Features, and Gas Pedal Add-on

The Sig P320 Spectre Comp features extensive slide cuts and styling typical of Sig Custom Works models. John acknowledges that Ryan avoids window cuts on Glock slides for reliability reasons but feels the Spectre Comp’s aggressive machining looks good and suits the gun’s role. Beyond the factory configuration, John added a gas pedal on the frame. This thumb rest is Sig proprietary and made by Go Gun, and it did not come installed from the factory. He describes how, when presenting the pistol, his support-hand thumb naturally lands on the gas pedal, giving a consistent indexing point and additional leverage to control recoil. This modification, combined with the factory compensator, slide work, and magwell, rounds out the Sig build as a direct counterpart to the custom Glock 45.