Matrix Arms MX19 NEPHILIM Slide & SCT 19 Assembled Frame Package
The Matrix Arms MX19 NEPHILIM Slide and SCT Manufacturing Compact 19 Assembled Frame combine a precision-machined optic-ready slide with an ergonomic Glock® Gen 3-compatible compact frame. This package brings together two aftermarket components designed for customers looking for distinctive styling, modern ergonomics, and broad Gen 3-pattern compatibility.
The MX19 NEPHILIM slide is manufactured by Matrix Arms at its New Hampshire facility from heat-treated 416 stainless steel. It features an aggressive serration and lightening-cut pattern, an RMR-compatible optic cut, and a durable black Cerakote finish.
The SCT Manufacturing Compact 19 frame provides the foundation for the package. Rather than arriving as a stripped frame, it comes with its lower internal components installed. The frame incorporates aggressive texturing, an extended beavertail, enlarged trigger guard, flared magazine well, accessory rail, and other ergonomic features designed to provide a secure and comfortable grip.
Together, the MX19 and SCT 19 create a distinctive Glock Gen 3-pattern compact platform with extensive aftermarket compatibility.
Matrix Arms MX19 NEPHILIM Slide
The Matrix Arms MX19 NEPHILIM is designed around the Glock 19 Gen 3-pattern platform and manufactured with an emphasis on machining quality, functionality, and distinctive styling.
Matrix Arms machines the slide from heat-treated 416 stainless steel, providing a strong foundation for a compact 9mm slide.
One of the NEPHILIM's most recognizable features is its extensive machining. Side and top cuts give the slide its distinctive appearance, while strategically positioned serrations provide additional gripping surfaces for slide manipulation.
The slide is finished in black Cerakote inside and out, providing a uniform appearance and additional surface protection.
RMR Optic-Ready Design
The MX19 NEPHILIM features an RMR-pattern optic cut positioned at the rear of the slide.
This provides compatibility with appropriately sized RMR-pattern optics while maintaining the ability to use compatible iron sights.
The slide accepts standard Glock 19/Glock 17-pattern sights, although sights are not included and individual components may require professional fitting.
Always confirm the dimensions, mounting hardware, and compatibility of a specific optic before installation.
RMR Hardware Specifications
The slide uses:
Use only hardware appropriate for the specific optic and slide configuration.
MX19 NEPHILIM Slide Features
Designed for Glock 19 Gen 3-pattern applications
Heat-treated 416 stainless-steel construction
RMR-pattern optic cut
Black Cerakote finish inside and out
Aggressive side serrations
Machined side cuts
Top slide cuts
Front groove detailing
Lightweight slide design
Compatible with standard Glock-pattern G19/G17 sights
Sights not included
Professional fitting may be required
SCT Manufacturing Compact 19 Assembled Frame
The SCT Manufacturing Glock-Compatible Compact 19 Assembled Frame provides a modern alternative to a traditional OEM-style compact frame.
The SCT 19 is based around Gen 3 compact-pattern compatibility while introducing its own grip geometry, texture, controls, and styling.
Most importantly, this version is sold as an assembled frame.
That means the lower internal components are already installed rather than requiring the customer to purchase a stripped frame and source each internal component separately.
According to SCT Manufacturing, assembled frames are completed using an SCT lower-parts kit and function-tested with a factory Glock slide to check proper operation, including striker engagement, trigger pull, and trigger reset.
Enhanced Grip & Ergonomics
One of the biggest differences between the SCT 19 and a traditional Glock-style frame is its ergonomics.
The grip incorporates aggressive texturing intended to provide secure contact without requiring aftermarket grip modifications.
Additional texturing and indexing surfaces around the frame provide reference points for the shooter's hands.
The frame also incorporates a high beavertail and low-profile bore-axis design, allowing the shooting hand to sit high on the frame while helping protect the hand from contact with the reciprocating slide.
Trigger-guard serrations provide an additional textured surface, while the enlarged trigger guard provides additional clearance, including when gloves are being worn.
Flared Magazine Well
The bottom of the SCT 19 grip incorporates a flared magazine well.
The enlarged opening provides a wider entrance for a compatible magazine while maintaining the compact proportions of the frame.
The magazine-release area is also recessed and contoured to provide easier access while helping protect the release from accidental activation.
Integrated Accessory Rail
The SCT 19 includes a MIL-STD-1913 Picatinny-style accessory rail at the front of the frame.
This provides an attachment point for compatible accessories designed for the rail dimensions.
As with any aftermarket accessory, compatibility should be verified with the accessory manufacturer before purchase.
SCT 19 Frame Construction
The SCT 19 uses a durable polymer frame construction designed for the compact Glock-pattern aftermarket.
The assembled frame includes an electroless nickel locking block along with installed trigger, magazine catch, slide-lock, slide-stop, ejector, pins, springs, and related lower components.
This makes the assembled SCT 19 substantially different from purchasing a stripped frame.
Instead of starting with an empty frame, the major lower components are already present.
SCT 19 Assembled Frame Components
The frame assembly includes:
SCT19 polymer frame
Electroless nickel locking block
Polished trigger assembly
Electroless nickel trigger bar
Polymer trigger
Polished 5.5-lb electroless nickel trigger connector
Standard polymer magazine catch
Magazine catch spring
Steel trigger pin
Steel locking-block pin
Standard slide lock
Slide-lock coil spring
Polymer trigger-housing pin
Trigger housing with Gen 4-style ejector
Standard slide-stop assembly
Compatibility
The package is primarily intended around the Glock 19 Gen 3-pattern compact platform.
The SCT Compact 19 frame is designed to support compatible compact configurations, including appropriately matched:
9mm / G19-pattern
.40 S&W / G23-pattern
.357 SIG / G32-pattern
Compatibility does not mean that every component across these calibers is interchangeable.
The slide, barrel, recoil assembly, magazines, and other components must be appropriate for the intended caliber and configuration.
The included Matrix Arms MX19 NEPHILIM slide is a G19-pattern 9mm slide, so customers should select all remaining components accordingly.
MX19 NEPHILIM + SCT 19: Why This Combination?
The biggest advantage of pairing these components is that each addresses a different part of the platform.
The Matrix Arms MX19 NEPHILIM provides the distinctive upper styling, stainless-steel construction, aggressive slide machining, and RMR-pattern optic capability.
The SCT 19 provides the ergonomic foundation with aggressive grip texture, an extended beavertail, flared magazine well, accessory rail, and installed lower components.
For customers who prefer an aftermarket Glock-compatible platform rather than a standard factory-style configuration, the combination provides a substantially different appearance and feel while retaining the familiar Gen 3-pattern ecosystem.
Product Specifications
Matrix Arms MX19 NEPHILIM Slide
Platform: Glock 19 Gen 3 pattern
Caliber: 9mm
Material: Heat-treated 416 stainless steel
Finish: Black Cerakote
Optic Cut: RMR pattern
Sight Compatibility: Standard G19/G17-pattern sights
Slide Cuts: Side and top
Serrations: Aggressive side gripping surfaces
RMR Plate Screws: 6-32 x 3/16"
RMR Mounting Screws: 6-32 x 1/4" flat-head socket cap
SCT Compact 19 Assembled Frame
Platform: Gen 3 compact Glock-pattern
Frame: SCT19 polymer
Configuration: Assembled
Accessory Rail: MIL-STD-1913 Picatinny
Magazine Well: Flared
Trigger Connector: Polished 5.5-lb electroless nickel
Locking Block: Electroless nickel
Ejector: Gen 4-style
Compatible Platforms: Appropriate G19, G23 and G32 Gen 3-pattern configurations
Important Cerakote Care Instructions
To help protect the MX19's Cerakote finish, do not clean the slide with aggressive degreasers or harsh chemicals.
Use an appropriate oil-based cleaner identified as safe for Cerakote finishes.
Always follow the cleaner manufacturer's directions and verify compatibility before applying any chemical to the finished slide.
Important Fitment & Safety Notice
This package contains aftermarket components.
Even when parts are described as compatible with the same platform, individual tolerances and aftermarket component combinations can vary.
Professional inspection and final fitment by a qualified gunsmith are recommended before use to confirm proper compatibility, function, and safe operation.
Do not assume compatibility based solely on the words “Glock compatible.”
Serialized Frame / FFL Notice
The SCT 19 assembled frame is a serialized firearm/receiver and is subject to applicable federal, state, and local firearm laws.
It must be transferred through an appropriate Federal Firearms Licensee (FFL) where required.
Customers are responsible for confirming that the product and intended configuration are lawful in their jurisdiction before ordering.
