Tyrant Cnc Tdp365Magexgrey P365-Xmacro Magazine Extension 9Mm Fits Sig P365 Gray 6061 Aluminum
Tyrant Cnc
The Tyrant CNC P365-XMacro magazine extension is a purpose-built capacity upgrade for shooters running Sig Sauer P365 X Macro platforms. If you carry or compete with a P365 X Macro and want three additional rounds of 9mm without sacrificing concealability, this aluminum extension delivers a practical boost—bringing your total capacity to 20+1—while keeping your profile tight against the frame.
Built from 6061 aerospace-grade aluminum and machined to match the P365 X Macro's lines, the extension minimizes the footprint you're adding to your magazine. Installation takes roughly ten seconds and requires no tools, thanks to Tyrant's proven "NoBak" retention spring technology: simply slide the extension onto your magazine base, and it locks in place. Removal is just as straightforward—push the plunger down and slide it off. That speed and simplicity matter whether you're swapping mags at the range or in the field.
One important note: the extension does not require a power spring to function, but some newer P365 X Macro magazines ship with a shorter OEM spring that may not lock the slide back on an empty chamber when the extension is in use. If you run into that behavior with certain magazines, you'll know why. The extension is compatible with most magwells and works on California-compliant versions. It's designed exclusively for the 17-round P365 X Macro magazine—it will not fit other lower-capacity P365 variants.
| Caliber | 9mm |
| Capacity Increase | +3 rounds |
| Material | 6061 aluminum |
| Extension Dimensions (H×W×L) | 28mm × 30.5mm × 40mm (1.55" × 1.09" × 0.9") |
| Extension Weight | 32 grams (0.3 oz) |
| Assembled Magazine Height | 133.35mm |
| Assembled Magazine Weight | 104 grams |
| Fitment | Sig Sauer P365 X Macro 17-round magazine only |
| Installation | Tool-free |
No. This extension is designed exclusively for the P365 X Macro 17-round magazine. It will not fit other lower-capacity P365 models with flanges that fold inward.
No. The "NoBak" retention technology allows the extension to slide onto and off your magazine base in about ten seconds with no tools. Push the retention plunger down to release it.
The extension does not require a power spring to function. However, some newer P365 X Macro magazines come with a shorter OEM spring that may not reliably lock the slide back when the extension is installed. Older magazine batches with longer springs typically do not have this issue.
Yes. The extension works with most magwells and is also compatible with California-compliant P365 X Macro magazines.