--- title: "Geissele Automatics Super Duty Mod 1 Black Pistol" description: "Black 5.56 pistol with a 12.5\" CHF chrome-lined barrel, SSA-E X two-stage trigger, Nanoweapon-coated BCG, and HUXWRX Flash Hider-QD." canonical_url: "https://www.kygunco.com/product/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black" meta: author: KYGUNCO "og:description": "Black 5.56 pistol with a 12.5\" CHF chrome-lined barrel, SSA-E X two-stage trigger, Nanoweapon-coated BCG, and HUXWRX Flash Hider-QD." "og:image": "https://cdn.kygunco.com/assets/products/282144/thumbnail.jpg?v=1741703839" "og:image:height": "500" "og:image:width": "500" "og:title": "Geissele Automatics Super Duty Mod 1 Black Pistol" --- > 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) / [Handguns](https://www.kygunco.com/category/shooting/guns/handguns) / [Semi-Auto](https://www.kygunco.com/category/shooting/guns/handguns/semi-auto) / GSS-08-551B ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/282144/main.jpg?v=1741703839) For illustration purposes only, this image may not be an exact representation of the product. # GEISSELE Super Duty Mod 1 Pistol 5.56 12.5" w/Brace Black The Geissele Super Duty Mod 1 is a new 5.56 pistol with a 12.5" cold hammer forged, chrome-lined barrel, black finish, and brace. It features a Nanoweapon-coated bolt carrier group, SSA-E X two-stage trigger, ambidextrous controls, Super Gas Block, and HUXWRX Flash Hider-QD muzzle device. 4.0 ** ** ** ** ** [1 review](#reviews) See Price In Cart ** 5 interest-free payments of **$376.40** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) As low as **$177.96**/month with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. ** 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. Almost gone. Order now before it sells out. Item # 282144 Style GSS-08-551B UPC 810081134026 Condition New Manufacturer [Geissele Automatics](https://www.kygunco.com/brand/geissele) Model Super Duty MOD1 Caliber 5.56 NATO Action Semi-Auto Barrel Length 12.5 in The Super Duty MOD1 is the current evolution of the Super Duty platform, incorporating continuous design development to provide superior ergonomics and modularity while maintaining the legendary balance of performance and reliability. Foundational to the renowned quality and performance of this Super Duty system is the in-house produced Cold Hammer Forged, chrome-lined barrel and Nanoweapon-coated Reliability Enhanced Bolt Carrier Group. Both the Geissele CHF barrel and Forged Stressproof Bolt are individually High-Pressure Tested (HPT) and Magnetic Particle Inspected (MPI), and work in concert to achieve unmatched dependability with match-grade accuracy. The Super Duty features a precisely balanced gas system, including the bomb-proofed Super Gas Block, fine-tuned gas port sizing and Super 42 braided buffer spring. These purposefully selected components minimize felt recoil while maintaining reliable cycling, even in adverse conditions. The MOD1 features the signature Nanocoated HUXWRX Flash Hider-QD muzzle device, offering seamless compatibility with the innovative HUXWRX FLOW series. At your fingertip is the SSA-E X two-stage trigger, which provides unrivaled control and performance with a wide-body Lightning Bow® shape and Nanocoated components. Purpose-driven controls, like the ambidextrous Super Configurable Safety and Airborne Charging Handle, checkered magazine release and Maritime Bolt Catch provide superior interfacing with the platform. ** 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). 4.0 ** ** ** ** ** 1 review ** ** ** ** ** 0 ** ** ** ** ** 1 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Reviews ** Aaron San Antonio, TX First off, Kygunco was amazing. Their prices are almost unmatched, they have a massive selection of whatever products you need, as for the Geissele, it came with a few issues and blemishes, although it’s obviously not a blemish pistol. The charging handle, unless I let it slam forward with the bolt, doesn’t not latch onto the upper, I have to push it forward for it to seed. Out of the two stakes, one was good, the other not so much, it was only on half the stake opening and barely any material going into the stake hole. The QD endplate has some extra material on it, looked like a glob of metal, like a nipple coming out of it. I contacted G$ and they said everything was within their QC specs? They still decided to send me a new charging handle. Hopefully that helps at least one of my issues. 3 months ago ** ** ** ** ** ## 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/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black#webpage","@type":"WebPage","description":"Black 5.56 pistol with a 12.5\" CHF chrome-lined barrel, SSA-E X two-stage trigger, Nanoweapon-coated BCG, and HUXWRX Flash Hider-QD.","name":"Geissele Automatics Super Duty Mod 1 Black Pistol","url":"https://www.kygunco.com/product/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black","about":{"@id":"https://www.kygunco.com/product/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black#/schema//kygunco"},"breadcrumb":{"@id":"https://www.kygunco.com/product/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black#breadcrumb"},"isPartOf":{"@id":"https://www.kygunco.com/#website"},"potentialAction":[{"@type":"ReadAction","target":["https://www.kygunco.com/product/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black"]}]},{"@id":"https://www.kygunco.com/#/schema/organization/kygunco","alternateName":"Kentucky Gun Company","currenciesAccepted":"USD","description":"Shop KYGUNCO for firearms, ammo, gun parts, optics, shooting accessories, and outdoor gear with online ordering and shipping options across the U.S.","email":"info@kygunco.com","foundingDate":"1946-01-01","hasMap":"https://www.google.com/maps/dir/?q=place_id:ChIJfwecWCBSaIgRguIjuoPha40","logo":"https://www.kygunco.com/logos/kygunco.svg","name":"KYGUNCO","priceRange":"$$","telephone":"+1-502-348-3594","url":"https://www.kygunco.com","@type":["Organization","LocalBusiness"],"address":{"@type":"PostalAddress","streetAddress":"401 Glenwood Drive","addressLocality":"Bardstown","addressRegion":"KY","postalCode":"40004","addressCountry":"US"},"contactPoint":{"@type":"ContactPoint","contactType":"Customer Service","telephone":"+1-502-348-3594","email":"info@kygunco.com","availableLanguage":"English","hoursAvailable":{"@type":"OpeningHoursSpecification","dayOfWeek":["https://schema.org/Monday","https://schema.org/Tuesday","https://schema.org/Wednesday","https://schema.org/Thursday","https://schema.org/Friday"],"opens":"09:00","closes":"17:00"}},"geo":{"@type":"GeoCoordinates","latitude":37.8032518,"longitude":-85.4252895},"hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","name":"Standard Return Policy","inStoreReturnsOffered":true,"merchantReturnDays":30,"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","returnMethod":["https://schema.org/ReturnByMail","https://schema.org/ReturnInStore"],"returnFees":"https://schema.org/FreeReturn","refundType":["https://schema.org/ExchangeRefund","https://schema.org/FullRefund","https://schema.org/StoreCreditRefund"],"applicableCountry":"US"},"hasOfferCatalog":{"@type":"OfferCatalog","name":"KYGUNCO Catalog","url":"https://www.kygunco.com/search"},"image":{"@id":"https://www.kygunco.com/#/schema/image/1"},"knowsAbout":["Firearms sales and transfers","FFL dealers and compliance","Optics and accessories","Outdoor and hunting equipment"],"openingHoursSpecification":[{"@type":"OpeningHoursSpecification","dayOfWeek":["https://schema.org/Monday","https://schema.org/Tuesday","https://schema.org/Wednesday","https://schema.org/Thursday","https://schema.org/Friday","https://schema.org/Saturday"],"opens":"09:00","closes":"18:00"}],"paymentAccepted":["Credit Card","Credova","Sezzle"],"sameAs":["https://x.com/kygunco","https://www.facebook.com/kentuckygunco","https://www.instagram.com/kygunco","https://www.youtube.com/@thekentuckygunco","https://rumble.com/c/KYGUNCO"]},{"@id":"https://www.kygunco.com/product/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black#product","@type":"Product","description":"Black 5.56 pistol with a 12.5\" CHF chrome-lined barrel, SSA-E X two-stage trigger, Nanoweapon-coated BCG, and HUXWRX Flash Hider-QD.","gtin":"810081134026","mpn":"08-551B","name":"Geissele Automatics Super Duty Mod 1 Black Pistol","sku":"282144","additionalProperty":[{"@type":"PropertyValue","name":"Model","value":"Super Duty MOD1"},{"@type":"PropertyValue","name":"Caliber","value":"5.56 NATO"},{"@type":"PropertyValue","name":"Action","value":"Semi-Auto"},{"@type":"PropertyValue","name":"Barrel Length","value":"12.5 in"}],"aggregateRating":{"@type":"AggregateRating","worstRating":1,"bestRating":5,"ratingValue":4,"reviewCount":1,"ratingCount":1},"brand":{"@type":"Brand","name":"Geissele Automatics"},"image":["https://cdn.kygunco.com/assets/products/282144/thumbnail.jpg?v=1741703839"],"mainEntityOfPage":{"@id":"https://www.kygunco.com/product/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black#webpage"},"offers":{"@type":"Offer","availability":"https://schema.org/InStock","price":1881.99,"priceCurrency":"USD","url":"https://www.kygunco.com/product/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black","itemCondition":"https://schema.org/NewCondition","priceValidUntil":"2027-12-30T00:00:00.000Z"},"review":{"@type":"Review","name":"Review for GEISSELE Super Duty Mod 1 Pistol 5.56 12.5\" w/Brace Black","reviewBody":"First off, Kygunco was amazing. Their prices are almost unmatched, they have a massive selection of whatever products you need, as for the Geissele, it came with a few issues and blemishes, although it’s obviously not a blemish pistol. The charging handle, unless I let it slam forward with the bolt, doesn’t not latch onto the upper, I have to push it forward for it to seed. Out of the two stakes, one was good, the other not so much, it was only on half the stake opening and barely any material going into the stake hole. The QD endplate has some extra material on it, looked like a glob of metal, like a nipple coming out of it. I contacted G$ and they said everything was within their QC specs? They still decided to send me a new charging handle. Hopefully that helps at least one of my issues.","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":4},"datePublished":"2026-07-24T16:13:52.1192676+00:00","author":{"@type":"Person","name":"Aaron"},"inLanguage":"en"}},{"@id":"https://www.kygunco.com/product/geissele-super-duty-mod-1-pistol-5.56-12.5-w-brace-black#breadcrumb","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","name":"Home","item":"https://www.kygunco.com","position":1},{"@type":"ListItem","name":"Shooting","item":"https://www.kygunco.com/category/shooting","position":2},{"@type":"ListItem","name":"Guns","item":"https://www.kygunco.com/category/shooting/guns","position":3},{"@type":"ListItem","name":"Handguns","item":"https://www.kygunco.com/category/shooting/guns/handguns","position":4},{"@type":"ListItem","name":"Semi-Auto","item":"https://www.kygunco.com/category/shooting/guns/handguns/semi-auto","position":5},{"@type":"ListItem","name":"GSS-08-551B","position":6}]},{"@id":"https://www.kygunco.com/#/schema/image/1","@type":"ImageObject","contentUrl":"https://cdn.kygunco.com/assets/backdrops/facade.jpg","inLanguage":"en","url":"https://cdn.kygunco.com/assets/backdrops/facade.jpg"}]} ``` ## Sitemap See the full [sitemap](https://www.kygunco.com/sitemap.md) for all pages.