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Sig Sauer MCX Virtus for Sale

Founded: 1976

HQ: Switzerland and Germany

The Sig Sauer MCX Virtus is a semi-automatic, short-stroke gas piston rifle with a rotating bolt and internal recoil system, signature caliber 5.56×45mm NATO. Its standout trait is a designed service life exceeding 20,000 rounds without parts replacement. On FirearmLand, Sig Sauer MCX Virtus listings most often appear in 5.56 NATO and .300 AAC Blackout (7.62x35mm).

Sig Sauer MCX Virtus Auctions

1 active auctions ending soon

Sig Sauer MCX Virtus Patrol 5.56 NATO 16" Elite Concrete Gray +ORIG BOX

Sig Sauer MCX Virtus Patrol 5.56 NATO 16" Elite Concrete Gray +ORIG BOX

Sig Sauer MCX Virtus 556 Short-Stroke Piston

Recently Sold

Sig Sauer MCX Virtus Patrol 5.56 NATO 16" Gray +ORIG BOX, AIMPOINT OPTICS

Sold On 08/24/2026

Sig Sauer MCX Virtus Patrol 5.56 NATO 16" Gray +ORIG BOX, AIMPOINT OPTICS

Sig Sauer MCX 556 RADIAN, TIMNEY, SCALARWORKS

Sig Sauer MCX Virtus 5.56 NATO 11.5 Gray +4 MAGS, ORIG BOX, EXTRAS

Sold On 08/17/2026

Sig Sauer MCX Virtus 5.56 NATO 11.5 Gray +4 MAGS, ORIG BOX, EXTRAS

Sig Sauer MCX Virtus 556 SIDE FOLDER BRACE

Sig Sauer MCX Virtus Patrol 300 Blackout FDE Short-Stroke Piston +7 MAGS

Sold On 05/22/2026

Sig Sauer MCX Virtus Patrol 300 Blackout FDE Short-Stroke Piston +7 MAGS

Sig Sauer MCX Virtus BUFFERLESS SYSTEM SIDE FOLDER

Sig Sauer MCX Virtus Pistol 5.56 NATO 11.5" THREADED Short-Stroke Piston

Sold On 05/15/2026

Sig Sauer MCX Virtus Pistol 5.56 NATO 11.5" THREADED Short-Stroke Piston

Sig Sauer MCX Virtus Pistol SIDE-FOLDER BRACE

Sig Sauer MCX Virtus Patrol 5.56 NATO 16 + TRIGGERTECH TWO-STAGE

Sold On 05/06/2026

Sig Sauer MCX Virtus Patrol 5.56 NATO 16 + TRIGGERTECH TWO-STAGE

Sig Sauer MCX Bufferless System FOLDER

Sig Sauer MCX Virtus 300 Blackout 9" Pistol Coyote Tan +ORIG BOX

Sold On 04/03/2026

Sig Sauer MCX Virtus 300 Blackout 9" Pistol Coyote Tan +ORIG BOX

Sig Sauer MCX Virtus 300-BLK-AAC Folding Brace

Sig Sauer MCX Virtus Patrol 300 Blackout 16" Gray Defense Sporting Rifle

Sold On 02/20/2026

Sig Sauer MCX Virtus Patrol 300 Blackout 16" Gray Defense Sporting Rifle

Sig Sauer MCX Virtus 300-BLK-AAC Target Carbine

Sig Sauer MCX Virtus Patrol 5.56 NATO 16" M-LOK RAIL

Sold On 01/09/2026

Sig Sauer MCX Virtus Patrol 5.56 NATO 16" M-LOK RAIL

Sig Sauer MCX 556 Folding Stock Rifle Two-Tone

Sig Sauer MCX Virtus Pistol 5.56 NATO 11.5" AR15 AR-15 Grey M-LOK +2 MAGS

Sold On 12/17/2025

Sig Sauer MCX Virtus Pistol 5.56 NATO 11.5" AR15 AR-15 Grey M-LOK +2 MAGS

Sig Sauer MCX Virtus Pistol 556 AR15 AR-15

Sig Sauer MCX Virtus Pistol 5.56 NATO 11.5" FDE & Black AR15 AR-15-Style

Sold On 10/10/2025

Sig Sauer MCX Virtus Pistol 5.56 NATO 11.5" FDE & Black AR15 AR-15-Style

Sig Sauer MCX Virtus Pistol 556 Folding Brace AR

Sig Sauer MCX Virtus Patrol 5.56 NATO 16.0" Stealth Grey

Sold On 08/13/2025

Sig Sauer MCX Virtus Patrol 5.56 NATO 16.0" Stealth Grey

Sig Sauer MCX 556 Virtus Patrol

Sig Sauer MCX Virtus Patrol 5.56 NATO 16" Gray

Sold On 07/25/2025

Sig Sauer MCX Virtus Patrol 5.56 NATO 16" Gray

Sig Sauer MCX 556

Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 11" Gray

Sold On 07/04/2025

Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 11" Gray

Sig Sauer MCX 556x45 Virtus AR-15 AR15

Sig Sauer MCX Virtus Patrol 300 Blackout AR-15 AR15 AR Sig-Sauer MCX 2 MAGS

Sold On 05/16/2025

Sig Sauer MCX Virtus Patrol 300 Blackout AR-15 AR15 AR Sig-Sauer MCX 2 MAGS

Sig Sauer MCX AR-15 AR15 AR Sig Sauer-MCX

Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 AR 16" Gray Sig-Sauer-MCX-Virtus

Sold On 05/02/2025

Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 AR 16" Gray Sig-Sauer-MCX-Virtus

Sig Sauer MCX Virtus AR15 AR Sig Sauer-MCX-Virtus

Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 AR 11.5" Sig-Sauer AR-15-AR15 AR

Sold On 04/14/2025

Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 AR 11.5" Sig-Sauer AR-15-AR15 AR

Sig Sauer MCX Virtus AR-15 AR15 AR Sig Sauer-MCX

Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 AR Custom Cerakote Sig-Sauer MCX

Sold On 04/11/2025

Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 AR Custom Cerakote Sig-Sauer MCX

Sig Sauer MCX Virtus AR-15 AR Sig Sauer-MCX-Virtus

Sig Sauer MCX Virtus Patrol 5.56 NATO AR-15 AR15 AR Sig-Sauer-MCX-Virtus

Sold On 04/07/2025

Sig Sauer MCX Virtus Patrol 5.56 NATO AR-15 AR15 AR Sig-Sauer-MCX-Virtus

Sig Sauer MCX Virtus AR-15 AR15 AR Sig Sauer-MCX

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Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 AR Sig-Sauer-MCX-Virtus +ORIG BOX

Sold On 04/04/2025

Sig Sauer MCX Virtus 5.56 NATO AR-15 AR15 AR Sig-Sauer-MCX-Virtus +ORIG BOX

Sig Sauer MCX Virtus AR-15 AR Sig-Sauer-MCX-Virtus

Sig Sauer MCX Virtus Patrol SIG-MCX SIG VIRTUS MCX-VIRTUS PATROL+3 MAGS

Sold On 03/07/2025

Sig Sauer MCX Virtus Patrol SIG-MCX SIG VIRTUS MCX-VIRTUS PATROL+3 MAGS

Sig Sauer MCX Virtus Patrol SIG-MCX VIRTUS PATROL

Sig Sauer MCX Virtus Pistol 11.5" GEISSELE AR-15 AR Sig-Sauer MCX-Virtus

Sold On 01/24/2025

Sig Sauer MCX Virtus Pistol 11.5" GEISSELE AR-15 AR Sig-Sauer MCX-Virtus

GEISSELE Sig Sauer MCX Virtus Sig Sauer-MCX Virtus

Sig Sauer MCX Virtus Pistol w/ Brace 5.56 NATO 11.5" Sig-Sauer MCX-Virtus

Sold On 01/10/2025

Sig Sauer MCX Virtus Pistol w/ Brace 5.56 NATO 11.5" Sig-Sauer MCX-Virtus

Sig Sauer MCX Virtus Sig Sauer-MCX Virtus

Sig Sauer Virtus MCX 11.5" Stealth Grey Sig-Sauer MCX Virtus +2 MAGS

Sold On 12/23/2024

Sig Sauer Virtus MCX 11.5" Stealth Grey Sig-Sauer MCX Virtus +2 MAGS

Sig Sauer Virtus MCX Pistol Sig Sauer-Virtus MCX

Sig Sauer MCX Virtus 5.56 Pistol AR-15 AR15 AR Sig-Sauer-MCX-Virtus FOLDER

Sold On 11/08/2024

Sig Sauer MCX Virtus 5.56 Pistol AR-15 AR15 AR Sig-Sauer-MCX-Virtus FOLDER

Sig Sauer MCX Virtus AR15 AR Sig Sauer-MCX-Virtus

LIKE-NEW Sig Sauer MCX Virtus 300 Blackout AR-15 AR15 AR 16" Sig-Sauer MCX

Sold On 10/07/2024

LIKE-NEW Sig Sauer MCX Virtus 300 Blackout AR-15 AR15 AR 16" Sig-Sauer MCX

Sig Sauer MCX Virtus AR-15 AR15 AR Sig Sauer-MCX

Sig Sauer MCX Virtus 300 Blackout AR-15 AR15 AR 9" Sig-Sauer MCX +ORIG BOX

Sold On 07/29/2024

Sig Sauer MCX Virtus 300 Blackout AR-15 AR15 AR 9" Sig-Sauer MCX +ORIG BOX

Sig Sauer MCX Virtus AR-15 AR15 AR Sig Sauer-MCX

Sig Sauer MCX Virtus 5.56 NATO 16" AR-15 AR15 AR Gray MCX

Sold On 07/12/2024

Sig Sauer MCX Virtus 5.56 NATO 16" AR-15 AR15 AR Gray MCX

Sig Sauer MCX Virtus AR-15 AR15 AR Sig Sauer-MCX

Sig Sauer MCX Virtus 5.56 NATO 11.5" Stealth Grey MCX

Sold On 03/15/2024

Sig Sauer MCX Virtus 5.56 NATO 11.5" Stealth Grey MCX

Sig Sauer MCX Virtus Sig Sauer-MCX

Sig Sauer MCX Virtus Patrol Rifle 5.56 NATO 16" Sig-Sauer 3 MAGS & ORIG BOX

Sold On 01/25/2024

Sig Sauer MCX Virtus Patrol Rifle 5.56 NATO 16" Sig-Sauer 3 MAGS & ORIG BOX

Sig Sauer MCX Virtus Sig Sauer-MCX Virtus

Sig Sauer MCX Gen2 Virtus Patrol 16" AR-15 AR15 AR MCX Gen-2

Sold On 01/07/2024

Sig Sauer MCX Gen2 Virtus Patrol 16" AR-15 AR15 AR MCX Gen-2

Sig Sauer MCX AR-15 AR15 AR Sig Sauer-MCX Gen-2

Sig Sauer MCX VIRTUS 300 Blackout 9" Gray AR Pistol Free-Floating +ORIG BOX

Sold On 10/01/2023

Sig Sauer MCX VIRTUS 300 Blackout 9" Gray AR Pistol Free-Floating +ORIG BOX

Sig Sauer MCX VIRTUS AR Pistol 30+1