Heckler & Koch Mr556 A1 5.56 Nato 16.5" Black Optic Ready 30-round Semi-automatic Rifle 642230262553 81000579
$3199.00 +
In Stock
Specifications
Brand: Heckler & Koch Model: MR556 UPC: 642230262553 MPN: 81000579 Caliber: 5.56 NATO Capacity: 30 Barrel Length: 16.5 Category: Rifles Finish: -
Product Information
Introducing the Heckler & Koch MR 556 A 1, a semi-automatic rifle that's a commercial carbine variant of the renowned HK 416 platform. This firearm is a testament to reliability, durability, and precision, with a rich lineage that traces back to the battlefield. Assembled in the U.S. using both German and U.S.-made components, the MR 556 A 1 is the closest you can get to owning the real thing.
The MR 556 A 1 employs a proprietary HK short-stroke gas piston system, a significant upgrade from the direct gas impingement system found in standard AR-15 style rifles. This closed piston system prevents exhaust gases from entering the receiver, ensuring your HK runs cooler, cleaner, and more reliably. In harsh conditions with dust, sand, or mud, the superiority of the HK system is undeniable, making it a trusted choice among elite military units, law enforcement professionals, and civilian enthusiasts worldwide.
The HK MR 556 A 1 comes in a sleek matte black finish and is packed with features. It operates on a 5.56 NATO caliber (also accepts .223 Remington) and boasts a 16.5" medium-contour cold hammer forged barrel with a 1:7" twist rate. It also features a flat-top optics-ready upper receiver, a 30-round standard AR-15 pattern magazine, a Magpul polymer pistol grip, an ambidextrous safety selector, and an M-Lok free-float handguard. The rifle also has a collapsible stock and weighs 8.60 lbs without the magazine.
Choose the rifle that carries the name of Heckler & Koch, a symbol of quality and reliability. Find your HK MR 556 A 1 and other firearms on GunMade.com, the largest online gun search engine for new and used gun prices.
For Sale In
Loading table view...
Please enable location services to view the map.
Variants
{
"productImage": "https://images.gunmade.com/catalog/642230262577/LG.webp",
"name": "Heckler & Koch MR556",
"minPrice": "NaN",
"maxPrice": "NaN",
"websiteLink": "GunDeals",
"brand": "Heckler & Koch",
"capacity": "10",
"caliber": "5.56x45mm NATO",
"barrelLength": "16.5 Medium Con",
"upc": "642230262577",
"data": {
"id": 37352,
"parent_id": 30985,
"source": "GunDeals",
"upc": "642230262577",
"brand": "Heckler & Koch",
"model": "MR556",
"series": null,
"mpn": "81000582",
"image_url": "https://images.gunmade.com/catalog/642230262577/LG.webp",
"product_title": "H&K MR556A1 CA Compliant 5.56 NATO 16\" Barrel 10-Round Capacity",
"msrp": "",
"category": "Rifles",
"sub_category": "Semi Auto",
"action": "Semi-Automatic",
"barrel_finish": null,
"barrel_length": "16.5 Medium Con",
"barrel_material": null,
"butt_plate_material": null,
"capacity_standard": "10",
"chamber_size": null,
"caliber_gauge": "5.56x45mm NATO",
"rate_of_twist": null,
"general_finish": null,
"general_material": null,
"grip_description": null,
"grip_finish": null,
"grip_material": null,
"left_handed": null,
"receiver_finish": null,
"receiver_material": "Picatinny Rail on Upper",
"safety": null,
"safety_description": null,
"sights_front": null,
"sights_general": null,
"sights_rear": null,
"stock_finish": null,
"stock_material": null,
"stock_structure": null,
"total_length": "37.68",
"total_length_extended": null,
"weight_in_ounces": null,
"weight_in_pounds": null,
"concealed_carry": null,
"frame_finish": null,
"frame_material": null,
"purpose": null,
"detail_page_url": "https://gun.deals/search/apachesolr_search/642230262577",
"finish": "Black",
"finish_type": null,
"stock": "Black Synthetic, Adjustable",
"stock_or_grips": null,
"sights": "No Sights",
"sights_type": null,
"weight": "8.60 lbs",
"shipping_weight": null,
"choke": null,
"additional_features": null,
"description": "$3,499.00",
"total_weight": null,
"thread_pattern": null,
"item_length": null,
"item_width": null,
"item_height": null,
"slug": "heckler-koch/mr556/642230262577",
"original_image": null,
"search_vector": "'556':4 '642230262577':5 '81000582':6 'heckler':1A 'koch':2A 'mr':3",
"product_description": null,
"in_stock_results": null,
"product_title_new": "Heckler & Koch MR556 5.56 NATO 16.5\" 10-Round Semi-Automatic Rifle",
"caliber_gauge_new": "5.56 NATO",
"model_new": "MR556",
"category_new": "Rifles",
"capacity_standard_new": "10",
"brand_slug": "heckler-&-koch",
"org_count": null,
"department": "Firearms",
"brand_new": "Heckler & Koch",
"sub_category_new": "Semi Auto",
"department_new": "Firearms",
"barrel_length_new": "16.5",
"action_new": "Semi-Automatic",
"publication_status": "published",
"last_processed_at": "2026-07-27T08:54:07.034849+00:00",
"normalization_method": "firearms-v2"
}
} Heckler & Koch MR556 -
{
"productImage": "https://images.gunmade.com/catalog/642230268463/3b64449a/XL.webp",
"name": "Heckler & Koch MR556",
"minPrice": "NaN",
"maxPrice": "NaN",
"websiteLink": "GunWatcher",
"brand": "Heckler & Koch",
"capacity": "Unknown",
"caliber": "5.56x45mm NATO",
"barrelLength": "16.5",
"upc": "642230268463",
"data": {
"id": 88687,
"parent_id": 30985,
"source": "GunWatcher",
"upc": "642230268463",
"brand": "Heckler & Koch",
"model": "MR556",
"series": null,
"mpn": "81001003",
"image_url": "https://images.gunmade.com/catalog/642230268463/3b64449a/XL.webp",
"product_title": "Heckler & Koch MR556 Semi-Auto Rifle 5.56x45mm",
"msrp": null,
"category": "Rifles",
"sub_category": "Semi-Automatic",
"action": "Semi-Auto",
"barrel_finish": null,
"barrel_length": "16.5",
"barrel_material": null,
"butt_plate_material": null,
"capacity_standard": null,
"chamber_size": null,
"caliber_gauge": "5.56x45mm NATO",
"rate_of_twist": null,
"general_finish": null,
"general_material": null,
"grip_description": null,
"grip_finish": null,
"grip_material": null,
"left_handed": null,
"receiver_finish": null,
"receiver_material": null,
"safety": null,
"safety_description": null,
"sights_front": null,
"sights_general": null,
"sights_rear": null,
"stock_finish": null,
"stock_material": null,
"stock_structure": null,
"total_length": null,
"total_length_extended": null,
"weight_in_ounces": null,
"weight_in_pounds": null,
"concealed_carry": null,
"frame_finish": null,
"frame_material": null,
"purpose": null,
"detail_page_url": null,
"finish": null,
"finish_type": null,
"stock": null,
"stock_or_grips": null,
"sights": null,
"sights_type": null,
"weight": null,
"shipping_weight": null,
"choke": null,
"additional_features": null,
"description": null,
"total_weight": null,
"thread_pattern": null,
"item_length": null,
"item_width": null,
"item_height": null,
"slug": "heckler-koch/mr556/642230268463",
"original_image": null,
"search_vector": "'556':4 '642230268463':5 '81001003':6 'heckler':1A 'koch':2A 'mr':3",
"product_description": null,
"in_stock_results": null,
"product_title_new": "Heckler & Koch MR556 75th Anniversary 5.56 NATO 16.5\" Tropentarn Camo Cerakote 30-Round Semi-Automatic Rifle",
"caliber_gauge_new": "5.56 NATO",
"model_new": "MR556",
"category_new": "Rifles",
"capacity_standard_new": null,
"brand_slug": null,
"org_count": 366,
"department": "Firearms",
"brand_new": "Heckler & Koch",
"sub_category_new": "Semi Auto",
"department_new": "Firearms",
"barrel_length_new": "16.5",
"action_new": null,
"publication_status": "published",
"last_processed_at": "2026-07-26T14:39:50.276936+00:00",
"normalization_method": "firearms-v2"
}
} Heckler & Koch MR556 -
{
"productImage": "https://images.gunmade.com/catalog/642230262553/e3c0cc83/XL.webp",
"name": "Heckler & Koch MR556",
"minPrice": "3499.00",
"maxPrice": "3499.00",
"websiteLink": "GunGenius",
"brand": "Heckler & Koch",
"capacity": "30",
"caliber": "5.56x45mm NATO",
"barrelLength": "16.5",
"upc": "642230262553",
"data": {
"id": 11414,
"parent_id": 30985,
"source": "GunGenius",
"upc": "642230262553",
"brand": "Heckler & Koch",
"model": "MR556",
"series": "A1",
"mpn": "81000579",
"image_url": "https://images.gunmade.com/catalog/642230262553/e3c0cc83/XL.webp",
"product_title": null,
"msrp": "3499",
"category": "Rifles",
"sub_category": "Semi Auto",
"action": "Semi-Automatic",
"barrel_finish": "",
"barrel_length": "16.5",
"barrel_material": "",
"butt_plate_material": "",
"capacity_standard": "30",
"chamber_size": "",
"caliber_gauge": "5.56x45mm NATO",
"rate_of_twist": "1:7 RH",
"general_finish": "",
"general_material": "",
"grip_description": "",
"grip_finish": "",
"grip_material": "",
"left_handed": "",
"receiver_finish": "",
"receiver_material": "Aluminum",
"safety": "TRUE",
"safety_description": "Manual",
"sights_front": "",
"sights_general": "None, Optic Ready",
"sights_rear": "",
"stock_finish": "",
"stock_material": "Black Synthetic/ Adjustable/ M-LOK Handguard",
"stock_structure": "",
"total_length": "37.68",
"total_length_extended": "",
"weight_in_ounces": null,
"weight_in_pounds": "8.6",
"concealed_carry": "",
"frame_finish": "Black",
"frame_material": "",
"purpose": "",
"detail_page_url": "https://www.gungenius.com/firearms/rifles/semi-auto-rifles/heckler-koch-hk-mr556-hcklr-he6iqx7y/",
"finish": "",
"finish_type": "",
"stock": "",
"stock_or_grips": "",
"sights": "",
"sights_type": "",
"weight": "",
"shipping_weight": "",
"choke": "",
"additional_features": "",
"description": "",
"total_weight": "",
"thread_pattern": "",
"item_length": "",
"item_width": "",
"item_height": "",
"slug": "heckler-koch/mr556/642230262553",
"original_image": "",
"search_vector": "'1':6 '556':4 '642230262553':7 '81000579':8 'heckler':1A 'koch':2A 'mr':3",
"product_description": "Introducing the Heckler & Koch MR 556 A 1, a semi-automatic rifle that's a commercial carbine variant of the renowned HK 416 platform. This firearm is a testament to reliability, durability, and precision, with a rich lineage that traces back to the battlefield. Assembled in the U.S. using both German and U.S.-made components, the MR 556 A 1 is the closest you can get to owning the real thing. ---------The MR 556 A 1 employs a proprietary HK short-stroke gas piston system, a significant upgrade from the direct gas impingement system found in standard AR-15 style rifles. This closed piston system prevents exhaust gases from entering the receiver, ensuring your HK runs cooler, cleaner, and more reliably. In harsh conditions with dust, sand, or mud, the superiority of the HK system is undeniable, making it a trusted choice among elite military units, law enforcement professionals, and civilian enthusiasts worldwide. ---------The HK MR 556 A 1 comes in a sleek matte black finish and is packed with features. It operates on a 5.56 NATO caliber (also accepts .223 Remington) and boasts a 16.5\" medium-contour cold hammer forged barrel with a 1:7\" twist rate. It also features a flat-top optics-ready upper receiver, a 30-round standard AR-15 pattern magazine, a Magpul polymer pistol grip, an ambidextrous safety selector, and an M-Lok free-float handguard. The rifle also has a collapsible stock and weighs 8.60 lbs without the magazine. ---------Choose the rifle that carries the name of Heckler & Koch, a symbol of quality and reliability. Find your HK MR 556 A 1 and other firearms on GunMade.com, the largest online gun search engine for new and used gun prices.",
"in_stock_results": 629,
"product_title_new": "Heckler & Koch MR556 A1 5.56 NATO 16.5\" Black Optic Ready 30-Round Semi-Automatic Rifle",
"caliber_gauge_new": "5.56 NATO",
"model_new": "MR556",
"category_new": "Rifles",
"capacity_standard_new": null,
"brand_slug": "heckler-&-koch",
"org_count": 3,
"department": "Firearms",
"brand_new": "Heckler & Koch",
"sub_category_new": "Semi Auto",
"department_new": "Firearms",
"barrel_length_new": "16.5",
"action_new": null,
"publication_status": "published",
"last_processed_at": "2026-07-26T14:39:50.276936+00:00",
"normalization_method": "firearms-v2"
}
} Heckler & Koch MR556 $3499.00
{
"productImage": "https://images.gunmade.com/catalog/642230262560/12c9c975/XL.webp",
"name": "Heckler & Koch MR556",
"minPrice": "3499.00",
"maxPrice": "3499.00",
"websiteLink": "GunGenius",
"brand": "Heckler & Koch",
"capacity": "10",
"caliber": "5.56x45mm NATO",
"barrelLength": "16.5",
"upc": "642230262560",
"data": {
"id": 11418,
"parent_id": 30985,
"source": "GunGenius",
"upc": "642230262560",
"brand": "Heckler & Koch",
"model": "MR556",
"series": "MR556",
"mpn": "81000580",
"image_url": "https://images.gunmade.com/catalog/642230262560/12c9c975/XL.webp",
"product_title": null,
"msrp": "3499",
"category": "Rifles",
"sub_category": "Semi Auto",
"action": "Semi-Automatic",
"barrel_finish": "",
"barrel_length": "16.5",
"barrel_material": "",
"butt_plate_material": "",
"capacity_standard": "10",
"chamber_size": "",
"caliber_gauge": "5.56x45mm NATO",
"rate_of_twist": "",
"general_finish": "",
"general_material": "",
"grip_description": "",
"grip_finish": "",
"grip_material": "",
"left_handed": "",
"receiver_finish": "",
"receiver_material": "",
"safety": "",
"safety_description": "",
"sights_front": "",
"sights_general": "Troy Micro Sights",
"sights_rear": "",
"stock_finish": "",
"stock_material": "Black Synthetic/ Adjustable/ M-LOK Handguard",
"stock_structure": "",
"total_length": "37.68",
"total_length_extended": "",
"weight_in_ounces": null,
"weight_in_pounds": "",
"concealed_carry": "",
"frame_finish": "Black",
"frame_material": "",
"purpose": "",
"detail_page_url": "https://www.gungenius.com/firearms/rifles/semi-auto-rifles/heckler-koch-hk-mr556-hcklr-mxmxmxn3/",
"finish": "",
"finish_type": "",
"stock": "",
"stock_or_grips": "",
"sights": "",
"sights_type": "",
"weight": "",
"shipping_weight": "",
"choke": "",
"additional_features": "",
"description": "",
"total_weight": "",
"thread_pattern": "",
"item_length": "",
"item_width": "",
"item_height": "",
"slug": "heckler-koch/mr556/642230262560",
"original_image": "",
"search_vector": "'556':4,6 '642230262560':7 '81000580':8 'heckler':1A 'koch':2A 'mr':3,5",
"product_description": "Experience the unparalleled performance and precision of the HECKLER & KOCH MR556A1. This semi-automatic rifle is chambered in the versatile 5.56x45mm, delivering a powerful punch in every shot. ---------The MR556A1 boasts a 16.5\" barrel, ensuring optimal accuracy and stability. Whether you're at the range or in the field, this rifle is designed to provide consistent, reliable performance. ---------With a 10-round capacity, the MR556A1 offers a perfect balance between firepower and maneuverability. It's built to handle any situation, from competitive shooting to home defense and hunting. ---------The HECKLER & KOCH MR556A1 is more than just a firearm; it's a testament to the craftsmanship and engineering prowess of Heckler & Koch. This rifle is a symbol of quality, durability, and reliability that you can trust. ---------Don't settle for anything less than the best. Experience the HECKLER & KOCH MR556A1 today. Find your perfect gun at GunMade.com, the largest online gun search engine for new and used gun prices.",
"in_stock_results": 558,
"product_title_new": "Heckler & Koch MR556 5.56 NATO 16.5\" Black Optic Ready 10-Round Semi-Automatic Rifle",
"caliber_gauge_new": "5.56 NATO",
"model_new": "MR556",
"category_new": "Rifles",
"capacity_standard_new": null,
"brand_slug": "heckler-&-koch",
"org_count": 3,
"department": "Firearms",
"brand_new": "Heckler & Koch",
"sub_category_new": "Semi Auto",
"department_new": "Firearms",
"barrel_length_new": "16.5",
"action_new": "Semi-Automatic",
"publication_status": "published",
"last_processed_at": "2026-07-26T14:39:50.276936+00:00",
"normalization_method": "firearms-v2"
}
} Heckler & Koch MR556 $3499.00
{
"productImage": "https://dzq8as2o6rtz2.cloudfront.net/product_image/642230261624-lg.webp",
"name": "Heckler & Koch MR556",
"minPrice": "3499.00",
"maxPrice": "3499.00",
"websiteLink": "GunGenius",
"brand": "Heckler & Koch",
"capacity": "10",
"caliber": "5.56x45mm NATO",
"barrelLength": "Unknown",
"upc": "642230261624",
"data": {
"id": 11420,
"parent_id": 30985,
"source": "GunGenius",
"upc": "642230261624",
"brand": "Heckler & Koch",
"model": "MR556",
"series": "MR556",
"mpn": "81000069",
"image_url": "https://dzq8as2o6rtz2.cloudfront.net/product_image/642230261624-lg.webp",
"product_title": null,
"msrp": "3499",
"category": "Rifles",
"sub_category": "Semi Auto",
"action": "Semi-Automatic",
"barrel_finish": "",
"barrel_length": "",
"barrel_material": "",
"butt_plate_material": "",
"capacity_standard": "10",
"chamber_size": "",
"caliber_gauge": "5.56x45mm NATO",
"rate_of_twist": "1:7 RH",
"general_finish": "",
"general_material": "",
"grip_description": "",
"grip_finish": "",
"grip_material": "",
"left_handed": "",
"receiver_finish": "",
"receiver_material": "Aluminum",
"safety": "TRUE",
"safety_description": "Ambidextrous",
"sights_front": "",
"sights_general": "Flip Up Front & Rear",
"sights_rear": "",
"stock_finish": "",
"stock_material": "",
"stock_structure": "",
"total_length": "",
"total_length_extended": "",
"weight_in_ounces": null,
"weight_in_pounds": "9.2",
"concealed_carry": "",
"frame_finish": "",
"frame_material": "",
"purpose": "Personal Protection,Shooting Sports",
"detail_page_url": "https://www.gungenius.com/firearms/rifles/semi-auto-rifles/heckler-koch-hk-mr556-hcklr-pei4r6f7/",
"finish": "",
"finish_type": "",
"stock": "",
"stock_or_grips": "",
"sights": "",
"sights_type": "",
"weight": "",
"shipping_weight": "",
"choke": "",
"additional_features": "",
"description": "",
"total_weight": "",
"thread_pattern": "",
"item_length": "",
"item_width": "",
"item_height": "",
"slug": "heckler-koch/mr556/642230261624",
"original_image": "",
"search_vector": "'556':4,6 '642230261624':7 '81000069':8 'heckler':1A 'koch':2A 'mr':3,5",
"product_description": "Unleash your shooting potential with the HK MR556A1, a semiautomatic rifle with match rifle capability. As a direct descendant of the HK416, this firearm is designed for civilian users, offering unparalleled performance and reliability. The MR556A1 utilizes the unique HK proprietary gas piston system, virtually eliminating common malfunctions found in other rifles. ---------Proudly assembled in the USA, the MR556A1 combines American and German-made components, ensuring a superior blend of craftsmanship and functionality. This rifle is a testament to international collaboration, delivering a firearm that stands out in performance and reliability.---------The MR556A1 features a Picatinny rail machined into the top of its upper receiver, providing a stable platform for mounting optics and mechanical sights. With numbered slots, you can easily remount your optics and sights without losing zero, ensuring accuracy every time.---------Enhance your shooting control with the MR556A1's two-stage trigger. This feature allows for a more precise and controlled shooting experience. Plus, this rifle is compatible with numerous accessories originally designed for the HK416, allowing for customization to fit your unique needs.---------Experience the power, precision, and reliability of the HK MR556A1. Find this and many more firearms on GunMade.com, the largest online gun search engine for new and used gun prices.",
"in_stock_results": 1,
"product_title_new": "Heckler & Koch MR556 A1 CA Compliant Rifle - 5.56 NATO, 16\" Barrel, 30-Round Magazine, Black Finish",
"caliber_gauge_new": "5.56mm NATO",
"model_new": "MR556",
"category_new": null,
"capacity_standard_new": null,
"brand_slug": "heckler-&-koch",
"org_count": null,
"department": "Firearms",
"brand_new": null,
"sub_category_new": null,
"department_new": null,
"barrel_length_new": null,
"action_new": null,
"publication_status": "published",
"last_processed_at": null,
"normalization_method": null
}
} Heckler & Koch MR556 $3499.00
Deals
1
Of 7
Gun Deals
Get the best gun and ammo DEALS that are out there right now! Enter your
email below and we will send them straight to your inbox!