$399.99
Availability: In Stock
The Rival Arms A1 Slide for Glock 43/43X with RMS Cut is a precision-engineered upgrade for shooters ready to build or refresh a compact carry pistol. Machined from 17-4PH stainless steel with a Nitride finish, this CNC-precision slide delivers the durability and accuracy of a match-grade component in a form factor designed for the slim, subcompact Glock platform. It's built for those who want better than factory specs without chasing a full-size gun—whether you're fine-tuning a carry piece, setting up a backup EDC, or assembling a custom build from the ground up.
Rival Arms centers their design on modern pistol ergonomics and broad parts compatibility. The A1 slide features front and rear serrations, giving you secure, deliberate grip points for slide manipulation under any condition. The RMS (Riton MRD System) cut is machined to accept direct red-dot mounting, opening the door to faster sight acquisition and improved accuracy potential—increasingly standard on duty and carry guns. That Nitride finish won't turn heads, but it will protect your steel against wear, corrosion, and the kind of abuse that matters in a carry gun or range workhorse.
If you're building a Glock 43 or 43X from parts, or swapping in a premium slide to freshen an aging gun, this is a no-compromise choice. The CNC precision and quality materials set it apart from the OEM slide, and Rival's commitment to compatibility means you won't be stuck hunting for parts that play nicely together. Drop it onto a quality frame and internals, and you've got a custom carry gun that feels and shoots like it cost three times as much.
| Brand | Rival Arms |
| Model | A1 Slide |
| Fit | Glock 43 / 43X |
| Optic Cut | RMS (Riton MRD System) |
| Material | 17-4PH Stainless Steel |
| Finish | Stainless Steel Nitride |
The Rival Arms A1 Slide is engineered for the Glock 43 and Glock 43X. Always verify fit with your specific frame before assembly, and consult the manufacturer's compatibility guidance if you're uncertain.
Yes. Rival Arms designs the A1 Slide for broad aftermarket compatibility. That said, always confirm any proprietary or tight-tolerance parts before purchasing, and don't hesitate to reach out if you're mixing in unfamiliar components.
The RMS cut is a mounting footprint milled into the slide to accept Riton MRD System red-dot optics directly, without requiring an additional adapter plate. This allows you to mount a modern optic for faster target acquisition and improved accuracy.
Yes, the A1 Slide is designed to work with Glock 43 and 43X frames. However, assembly and fitting should be performed by someone comfortable with firearms assembly, or by a qualified gunsmith if you're new to the process.
SKU: 115845086 • Width: 3in • Height: 1.6in • Depth: 9.4in • Weight: 0.65oz
Availability: In Stock
The Rival Arms A1 Slide for Glock 43/43X with RMS Cut is a precision-engineered upgrade for shooters ready to build or refresh a compact carry pistol. Machined from 17-4PH stainless steel with a Nitride finish, this CNC-precision slide delivers the durability and accuracy of a match-grade component in a form factor designed for the slim, subcompact Glock platform. It's built for those who want better than factory specs without chasing a full-size gun—whether you're fine-tuning a carry piece, setting up a backup EDC, or assembling a custom build from the ground up.
Rival Arms centers their design on modern pistol ergonomics and broad parts compatibility. The A1 slide features front and rear serrations, giving you secure, deliberate grip points for slide manipulation under any condition. The RMS (Riton MRD System) cut is machined to accept direct red-dot mounting, opening the door to faster sight acquisition and improved accuracy potential—increasingly standard on duty and carry guns. That Nitride finish won't turn heads, but it will protect your steel against wear, corrosion, and the kind of abuse that matters in a carry gun or range workhorse.
If you're building a Glock 43 or 43X from parts, or swapping in a premium slide to freshen an aging gun, this is a no-compromise choice. The CNC precision and quality materials set it apart from the OEM slide, and Rival's commitment to compatibility means you won't be stuck hunting for parts that play nicely together. Drop it onto a quality frame and internals, and you've got a custom carry gun that feels and shoots like it cost three times as much.
| Brand | Rival Arms |
| Model | A1 Slide |
| Fit | Glock 43 / 43X |
| Optic Cut | RMS (Riton MRD System) |
| Material | 17-4PH Stainless Steel |
| Finish | Stainless Steel Nitride |
The Rival Arms A1 Slide is engineered for the Glock 43 and Glock 43X. Always verify fit with your specific frame before assembly, and consult the manufacturer's compatibility guidance if you're uncertain.
Yes. Rival Arms designs the A1 Slide for broad aftermarket compatibility. That said, always confirm any proprietary or tight-tolerance parts before purchasing, and don't hesitate to reach out if you're mixing in unfamiliar components.
The RMS cut is a mounting footprint milled into the slide to accept Riton MRD System red-dot optics directly, without requiring an additional adapter plate. This allows you to mount a modern optic for faster target acquisition and improved accuracy.
Yes, the A1 Slide is designed to work with Glock 43 and 43X frames. However, assembly and fitting should be performed by someone comfortable with firearms assembly, or by a qualified gunsmith if you're new to the process.
SKU: 115845086 • Width: 3in • Height: 1.6in • Depth: 9.4in • Weight: 0.65oz