--- title: "HK USA MR556A1 5.56 NATO 16.5\" 30rd - Tropentarn Camo" canonical_url: "https://www.kygunco.com/product/hk-usa-mr556a1-223-5.56-16.5-30rd-tropentarn-75th-anniv" meta: author: KYGUNCO "og:image": "https://cdn.kygunco.com/assets/products/258234/thumbnail.jpg?v=1721331007" "og:image:height": "500" "og:image:width": "500" "og:title": "HK USA MR556A1 5.56 NATO 16.5\" 30rd - Tropentarn Camo" --- > 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) / [Rifles](https://www.kygunco.com/category/shooting/guns/rifles) / [Semi-Auto](https://www.kygunco.com/category/shooting/guns/rifles/semi-auto) / HCK-81001004 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/258234/main.jpg?v=1721331007) For illustration purposes only, this image may not be an exact representation of the product. # HK USA MR556A1 5.56 NATO 16.5" 30rd - Tropentarn Camo $4,534.99 ![Credova logo](https://www.kygunco.com/brands/credova.svg) As low as **$239.77**/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. Item # 258234 Style HCK-81001004 UPC 642230268456 Condition New Manufacturer [HK USA](https://www.kygunco.com/brand/hk-usa) Model MR556A1 Round Capacity 30 Caliber 5.56 NATO Action Semi-Auto Barrel Length 16.5 in As HK celebrates its 75th anniversary, there is a very limited opportunity to own a piece of our history with our 75th anniversary MR-Series rifles. Only 500 of each of these rifles will be sold. The MR762A1 rifles will be decorated in Tropentarn, the camo pattern utilized by the German armed forces or Bundeswehr. The MR556A1 is a direct descendent of the HK416 series, only in a semi-automatic rifle configuration developed for civilian users. The MR556A1 uses a proprietary HK short-stroke gas piston in place of the direct-gas-impingement system found on lesser AR15-style rifles that propels exhaust gas into the upper receiver to operate the action. In the "closed" HK piston system, exhaust gasses never enter the receiver, which means the HK runs cooler, cleaner and more reliably. And when adverse conditions, like dust, sand and mud are introduced, the advantage of the HK system becomes even more drastic. The MR556A1 has a cold hammer forged barrel made from cannon-grade steel, producing a barrel that ensures accuracy, even after firing thousands of rounds. Includes four 10rd magazines. - Barrel Finish Black - Barrel Material Cold Hammer Forged Steel - Twist 1:7" - Receiver Description Picatinny Rail - Grips Black Polymer - Handguards M-LOK - Trigger Pull Weight 7.64 lbs - Grooves 6 - Height 9.45" - Includes 4 Magazines - Receiver Material Aluminum - Width 3.07" - Stock Description Adjustable - Barrel Description Steel - Receiver Finish Tropentarn Camo - Weight 8.60 lbs - Stock Finish Black - Handguard Finish Tropentarn Camo Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. ** 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/hk-usa-mr556a1-223-5.56-16.5-30rd-tropentarn-75th-anniv#webpage","@type":"WebPage","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"HK USA MR556A1 5.56 NATO 16.5\" 30rd - Tropentarn Camo","url":"https://www.kygunco.com/product/hk-usa-mr556a1-223-5.56-16.5-30rd-tropentarn-75th-anniv","about":{"@id":"https://www.kygunco.com/product/hk-usa-mr556a1-223-5.56-16.5-30rd-tropentarn-75th-anniv#/schema//kygunco"},"breadcrumb":{"@id":"https://www.kygunco.com/product/hk-usa-mr556a1-223-5.56-16.5-30rd-tropentarn-75th-anniv#breadcrumb"},"isPartOf":{"@id":"https://www.kygunco.com/#website"},"potentialAction":[{"@type":"ReadAction","target":["https://www.kygunco.com/product/hk-usa-mr556a1-223-5.56-16.5-30rd-tropentarn-75th-anniv"]}]},{"@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/hk-usa-mr556a1-223-5.56-16.5-30rd-tropentarn-75th-anniv#product","@type":"Product","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","gtin":"642230268456","mpn":"81001004","name":"HK USA MR556A1 5.56 NATO 16.5\" 30rd - 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