--- title: "Sig Sauer MCX Rattler LT 5.56 NATO SBR, Black" description: "5.56 NATO semi-automatic SBR with a 7.75\" cold hammer forged barrel, folding stock, M-LOK handguard, and one 30rd magazine." canonical_url: "https://www.kygunco.com/product/sig-sauer-sigmcx-5.56-nato-sbr-7.75-rattlerlt-blk-fold-30rd" meta: author: KYGUNCO "og:description": "5.56 NATO semi-automatic SBR with a 7.75\" cold hammer forged barrel, folding stock, M-LOK handguard, and one 30rd magazine." "og:image": "https://cdn.kygunco.com/assets/products/247854/thumbnail.jpg?v=1776694998" "og:image:height": "500" "og:image:width": "500" "og:title": "Sig Sauer MCX Rattler LT 5.56 NATO SBR, Black" --- > 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-556N-7B-LT-SBR ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/247854/main.jpg?v=1776694998) For illustration purposes only, this image may not be an exact representation of the product. # SIG SAUER SIGMCX RattlerLT 5.56 NATO 7.75" 30rd - Black The SIG MCX Rattler LT is a compact 5.56 NATO semi-automatic short-barreled rifle with a 7.75" cold hammer forged barrel, gas piston system, folding stock, M-LOK handguard, and full-length Picatinny rail. It features ambidextrous controls, a SIG Flatblade Match Trigger, interchangeable barrel capability, and includes one 30-round magazine. $2,499.99 ** 5 interest-free payments of **$500** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. ** NFA / Class 3 NFA transfer requirements vary by product and location. Additional documentation, approvals, or a qualified dealer may be required. Check local and state regulations to ensure eligibility and compliance before purchasing. ** Ships To FFL Dealer Handled by our expert shippers in Bardstown, KY. ** Check Local Restrictions Not sure whether this item can be shipped to your area? Enter your ZIP code for a quick check. Item # 247854 Style RMCX-556N-7B-LT-SBR UPC 798681684632 Condition New Manufacturer [Sig Sauer](https://www.kygunco.com/brand/sig-sauer) Model SIG MCX Round Capacity 30 Caliber 5.56 NATO Action Semi-Auto Barrel Length 7.75 in The SIG MCX-Rattler LT takes the ultra-compact capability of the original Rattler and enhances it with greater modularity, improved compatibility, and modern control features. Designed for maximum maneuverability without sacrificing performance, this short-barreled rifle combines a compact footprint, piston-driven reliability, and suppressor-ready configuration to deliver exceptional versatility in tight spaces and demanding conditions. FEATURES - Fully ambidextrous controls - Ambidextrous bolt catch and bolt release - Adjustable gas piston system - SIG Flatblade Match Trigger - Interchangeable barrel capability - Compatible with MCX LT barrels and handguards - SIG suppressor-ready QD flash hider - M-LOK handguard - Folding stock - Full-length Picatinny rail SPECIFICATIONS - Caliber: 5.56 NATO - Semi-automatic action - 7.75" cold hammer forged barrel - 1:7 twist rate - Gas piston operating system - 5/8x24 threaded muzzle - Black anodized finish - Minimalist Plus folding stock - Capacity: 30+1 - Includes one 30-round magazine - Overall length: 18.1" to 25.9" - Weight: 6.2 lbs. ** 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). 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-sigmcx-5.56-nato-sbr-7.75-rattlerlt-blk-fold-30rd#webpage","@type":"WebPage","description":"5.56 NATO semi-automatic SBR with a 7.75\" cold hammer forged barrel, folding stock, M-LOK handguard, and one 30rd magazine.","name":"Sig Sauer MCX Rattler LT 5.56 NATO SBR, 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