Arm Or Ally Duty Slide w/ RMS Cut For Glock 43

Arm Or Ally Duty Slide w/ RMSc Cut For Glock 43

The Arm Or Ally Duty Slide w/ RMSc Cut for Glock 43 brings optic-ready capability to the slimline platform without adding oversized windows, barrel ports, or unnecessary exterior machining. Precision CNC machined in the USA from 416R stainless steel, this stripped slide provides a durable foundation for replacing a factory upper or completing a compact custom build.

Its solid-body profile maintains the clean proportions of the G43 while adding front and rear angled serrations for confident slide manipulation. The result is a practical Glock 43 slide built around straightforward component compatibility, compact red-dot mounting, and a wide selection of custom finish options.

RMSc Optic Cut for Slimline Red Dots

The slide features a modified Shield RMSc-pattern optic cut designed for popular micro red dots used on slimline pistols. Compatible optics include the Shield RMSc, Holosun 407K and 507K, SIG Sauer ROMEOZero, and other sights confirmed to use the same modified RMSc mounting interface.

The cut uses no rear recoil lugs and incorporates lowered front lugs to accommodate multiple micro-optic patterns within the same mounting area. Because optic bodies, screw lengths, and mounting requirements can vary, always verify the supplied or recommended hardware before installation.

This slide is not cut for full-size RMR-pattern optics such as the Trijicon RMR, Trijicon SRO, or Holosun 407C and 507C. It is also different from the narrower Trijicon RMRcc footprint.

Solid-Body Glock 43 Slide

The Arm Or Ally Duty Slide uses a closed top and solid side profile rather than exposed barrel windows or functional porting. This configuration is intended for standard flush-and-crown and threaded slimline barrels and provides a traditional upper profile with fewer exterior openings.

Because it does not include a barrel-port window, this slide should not be paired with a ported barrel that requires gases to vent through the top or sides of the slide. Builders planning a functional ported configuration should use the Arm Or Ally Ported Duty Slide designed for proper barrel-port exposure.

Front and Rear Angled Serrations

Machined serrations at both ends of the slide create positive gripping surfaces for loading, press checks, and malfunction clearance. The forward serrations offer an additional manipulation point away from the optic, while the rear serrations retain a familiar location for overhand or pinch-style operation.

The serration pattern adds functional texture without making the slide excessively aggressive or disrupting its compact duty-oriented appearance.

Custom Finish Options

This Arm Or Ally Glock 43 slide is offered in a rotating selection of custom coatings, including solid colors, camouflage patterns, metallic appearances, and specialty designs. Depending on the selected variation, the slide may feature a Cerakote or QPQ Nitride finish for additional surface protection and a distinctive completed appearance.

Pattern placement may vary slightly on camouflage and specialty finishes. Review the selected color variation and product images before ordering.

Stripped Slide Configuration

This product is sold as a stripped slide. It does not include a barrel, recoil spring assembly, internal slide components, sights, optic, cover plate, or mounting hardware unless the selected variation specifically states otherwise.

Completing the upper generally requires a compatible firing pin assembly, firing pin safety and spring, extractor assembly, channel liner, back plate, slimline barrel, recoil spring assembly, and Glock 43-pattern sights.

Arm Or Ally guarantees replacement fit and function on factory frames when the slide is assembled with a factory slide completion kit or an Arm Or Ally Slide Completion Parts Kit. Fitment and operation with other aftermarket completion kits may vary.

Glock 43 and Glock 43X Compatibility

The Arm Or Ally Duty Slide is designed for Glock 43 and Glock 43X frames and compatible slimline-pattern builds. It accepts compatible factory-style G43 upper components, barrels, recoil assemblies, and sights.

This slide is not compatible with Glock 48 barrels because the G48 uses a longer slide and barrel configuration. It is also not intended for double-stack Glock 19, Glock 26, or other standard-width frame patterns.

Features

• Compatible with Glock 43 and Glock 43X frames
• Precision CNC machined from American 416R stainless steel
• Solid-body profile without windows or functional barrel ports
• Modified Shield RMSc-pattern optic cut
• Compatible with Shield RMSc optics
• Compatible with Holosun 407K and 507K optics
• Compatible with SIG Sauer ROMEOZero-pattern optics
• Front and rear angled serrations
• Accepts compatible Glock 43-pattern iron sights
• Compatible with flush-and-crown and threaded G43 barrels
• Accepts compatible factory-style slimline internal components
• Available in Cerakote and QPQ Nitride finish options
• Stripped slide configuration
• Made in the USA
• Approximate weight: 8.3 oz.