--- title: "Sig Sauer MCX SBR 5.56 NATO | SBR" description: "Sig Sauer MCX SBR 5.56 NATO 5.5\" 30rd Short Barrel Rifle from KYGunCo. Threaded barrel, M-LOK, Black w/ PDW Stock. CLASS III- SBR." canonical_url: "https://www.kygunco.com/product/sig-sauer-rmcx-5b-tap-sbr-mcx-5.56-nato-sbr-5.5-pdw-stock-al-mlok-hg-30rd" meta: author: KYGUNCO "og:description": "Sig Sauer MCX SBR 5.56 NATO 5.5\" 30rd Short Barrel Rifle from KYGunCo. Threaded barrel, M-LOK, Black w/ PDW Stock. CLASS III- SBR." "og:image": "https://cdn.kygunco.com/assets/products/138836/thumbnail.jpg?v=1713453820" "og:image:height": "500" "og:image:width": "500" "og:title": "Sig Sauer MCX SBR 5.56 NATO | SBR" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Guns](https://www.kygunco.com/category/shooting/guns) / [Class III](https://www.kygunco.com/category/shooting/guns/class-iii) / [Short Barrel Rifles](https://www.kygunco.com/category/shooting/guns/class-iii/short-barrel-rifles) / SGS-RMCX-5B-TAP-SBR ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/138836/main.jpg?v=1713453820) For illustration purposes only, this image may not be an exact representation of the product. # SIG SAUER MCX SBR 5.56 NATO 5.5" 30rd Short Barrel Rifle / Threaded - M-LOK - Black w/ PDW Stock $2,701.99 Online In Store [** KYGUNCO Bardstown 401 Glenwood Drive, Bardstown KY](https://www.google.com/maps/dir/?q=place_id:ChIJfwecWCBSaIgRguIjuoPha40) [** KYGUNCO Louisville 2301 Nelson Miller Parkway, Louisville KY](https://www.google.com/maps/dir/?q=place_id:ChIJu1yzo5WZaYgRU5lrq2lQNhI) Item # 138836 Style RMCX-5B-TAP-SBR UPC 798681601165 Condition New Manufacturer [Sig Sauer](https://www.kygunco.com/brand/sig-sauer) Model MCX Hand Right Hand Finish Black Round Capacity 30 Caliber 5.56 NATO, 223 Rem Action Semi-Auto Barrel Length 5.5 in Designed with the needs of modern warfighters in mind Sig Sauer's MCX Virtus is the next generation of the AR platform. The rifle is modular by design, allowing for fast changes in caliber (5.56 NATO and 300 ACC Blackout) and configuration with minimal tool use, so much so that Sig Sauer claims it can be customized into over 500 configurations. The MCX Virtus' main feature is its gas operated short-stroke recoil system which is completely contained within the rifle's upper receiver, eliminating the need for a buffer tube and allowing the rifle to utilize a folding stock. The rifle also utilizes Sig's taper-lok muzzle system allowing user the ability easily and change the rifles muzzle attachments; the MCX was designed specifically to be suppressor friendly. - Available in Flat Dark Earth and Stealth Gray finishes - Hammer forged carbon steel barrel and three pronged flash hider - Free float skeletonized aluminum handgaurd with M-LOK attachment points - Features the Sig Matchlite Duo Trigger for a crisp and clean trigger break - Ambidextrous AR-style controls and dual-paddle bolt-release - Vertical M1913 rail on rear of lower receiver for stock - 5 position telescoping and folding stock. **SPECIFICATIONS** - Caliber: 5.56 x 45mm NATO - Rifle Overall Length: 5.5" - Action: Gas Piston - Semi-Automatic - Safety: AR Selector Swith - Rifle Barrel Length: 5.5" - Rifle Barrel Twist: 1:7" - Rifle Stock: Folding Stock - Scope Mount: Picatinny Rail - Magazines Included: (1) 30 Round - Barrel Thread Pitch: 1/2x28 - Iron Sights No - Handedness: Right Hand - Product Type Rifle - Item Condition: New - UPC 798681601165 - MPN RMCX-5B-TAP-SBR ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). ## Watch The Product In Action 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Don't Forget Your Ammo ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/sig-sauer-rmcx-5b-tap-sbr-mcx-5.56-nato-sbr-5.5-pdw-stock-al-mlok-hg-30rd#webpage","@type":"WebPage","description":"Sig Sauer MCX SBR 5.56 NATO 5.5\" 30rd Short Barrel Rifle from KYGunCo. Threaded barrel, M-LOK, Black w/ PDW Stock. 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