SIG Sauer MCX / MPX
SIG's civilian semi-auto pair — one centrefire, one PCC — banned together in December 2024. The modular design was the point and the case.
Is the SIG Sauer MCX / MPX banned in Canada? Yes. The SIG Sauer MCX / MPX is prohibited in Canada. It was named in SOR/2024-248 (December 2024). If you owned one before the deadline, confirm whether it appears on the federal Assault-Style Firearms Compensation Program list. The current amnesty for prohibited firearms expires 90 days after the latest Supreme Court appeal termination under SOR/2026-114.
Classification: Prohibited · OIC/SOR: SOR/2024-248 · Ban-Risk: Already Gone · Compensation: Confirm federal list · Amnesty: SCC appeals + 90 days
Verdict
The SIG MCX and SIG MPX are SIG Sauer's modular civilian semi-automatic platforms, released to the U.S. civilian market in 2014 and Canadian Non-restricted classification in 2016–2017. The MCX is a 5.56 NATO short-stroke gas-piston rifle with a quick-change barrel system; the MPX is a 9mm closed-bolt blowback PCC built on the same lower receiver. Together they were SIG's bid for the modular-civilian-rifle market the AR-15 had defined, and the modularity was the design point — caliber conversions in minutes, the same controls and ergonomics across both platforms, the same Sig fit-and-finish. SOR/2024-248 named both on December 5, 2024 as a single family in the regulatory naming. The entry argues editorially that the OIC pathway recognizes platform-modularity as a category — the MCX and MPX were named not as two separate rifles but as one design system.
Tracking a rifle on this list?
The Ban-Risk Index updates as classifications and the federal compensation list change. Get those changes, and the SCC + 90-day amnesty deadline reminders, in The Dispatch.
Lineage
Parents: SIG MCX military variant (used by U.S. Army Special Forces, never civilian-legal)
Siblings: SIG MCX Virtus (variant), SIG MCX Spear (newer .277 Fury variant)
Derived: MCX Rattler (SBR variant, prohibited)
Primary sources for this entry
- Canada Gazette — SOR/2024-248 — Canada Gazette. accessed 2024-12-06
- SIG Sauer — MCX product page — Manufacturer. accessed 2026-05-27
Safety note: the Ban-Risk Index is editorial estimation, not legal advice or a substitute for current official guidance. The classification field reflects current RCMP FRT status as of the last-scored date. For any transfer, surrender, deactivation, or transport question, consult primary RCMP / Public Safety Canada sources and, where appropriate, a Canadian firearms lawyer.
