Heckler and Koch

A direct descendent of the HK416, the MR556A1 is a semi-automatic rifle developed by Heckler & Koch as a premium level commercial/civilian firearm with match rifle capability. Like the HK416, the MR556A1 is a major product improvement over conventional AR-type carbines and rifles. The Heckler & Koch MR556A1 uses the HK proprietary gas piston operating system, employing a piston and a solid operating “pusher” rod in place of the gas tube normally found in AR15/M16/M4-style firearms. This method of operation virtually eliminates malfunctions that are common to direct impingement gas systems since hot carbon fouling and waste gases do not enter the receiver area. This is the same key feature critical to the success of the HK416 rifles used by leading military and law enforcement customers

A direct descendent of the HK416, the MR556 is a semi-automatic rifle developed by Heckler & Koch as a premium level commercial/civilian firearm with match rifle capability. Like the HK416, the MR556 is a major product improvement over conventional AR-type carbines and rifles. The Heckler & Koch MR556 uses the HK proprietary gas piston operating system, employing a piston and a solid operating pusher rod in place of the gas tube normally found in AR15/M16/M4-style firearms. This method of operation virtually eliminates malfunctions that are common to direct impingement gas systems since hot carbon fouling and waste gases do not enter the receiver area. This is the same key feature critical to the success of the HK416 rifles used by leading military and law enforcement customers. The MR556 Competition model features input from competitive shooters and is designed for enhanced performance in a competitive or duty environment. Features a 14" Modular keymod rail system, lightweight Magpul CTR stock, muzzle brake, oversized, extended magazine release, extended charging handle, two stage trigger, and cold hammer forged 16.5" barrel.

The HK MR762 has been engineered based on the HK417 design, but in a semi-automatic configuration for civiliam use. The MR762 uses the HK Gas Piston System, consisting of a piston and operating rod which reduces wear and carbon fouling. This increases reliability over gas impingement systems. The MR 762 comes standard with ambidextrous controls, free floating Modular Rail System (MRS), and a two stage trigger.

HK USC are covered by HK‘s lifetime warranty.

LIMITED PRODUCTION FOR 2018

USC CARBINE FEATURES

Heckler & Koch steel high reliability AR15 .223, 5.56x45 30 round magazines. These superior magazines are designed to withstand the most adverse enviroments and extremes and still function. Featuring durable steel contruction of the magazine body and follower, an anti-friction type finish and a advanced high strength spring.

Please check restricted shipping zones before ordering.

Heckler & Koch Barrel O-Ring for all H&K .45ACP caliber pistols (HK45, HK45C, MK23, USPT). Factory replacement part manufactured by HK in Germany.

HK factory made catch for USP Compact LEM and HK45 models. New style catch to convert older USP models to the newer style catch as well as to convert to the LEM variant. Fits all LEM models for USP Full Size, Expert, Elite, USPC, HK45, and HK45C.

Factory Heckler & Koch detent for all USP and USP Compact models with trigger variants 3 and 4.

Made in Germany at the HK factory, disconnectors for full size USP 9mm, .40S&W, .45ACP. Also fits USP Compact 9mm, .40S&W, .357SIG, .45ACP, USP Compact LEM and HK45.

New style firing pin block for all USP and Compact, all P2000 and P2000SK, all P30, all HK45 and Compact models.

HK Hammer for full size USPs chambered in 9mm and .40S&W, .45ACP and USP Compact 9mm, .40S&W, .357SIG and .45ACP. models with trigger variants V1, V2, V3, V4, V9, V10.

Heckler & Koch HK45 threaded barrel. Manufactured by the H&K factory in Germany. Designed to fit the full size HK45, not USP models. Threads are 16X1-LH.

• The longer hammer spring is for all USP, USP Compact and full size HK45.
• The shorter hammer spring is only for the HK45 Compact.

• Use the trigger return spring that is already in your gun for light LEM trigger pull, approximately 4-5 lbs.
• Use the trigger return spring in the kit for the heavier LEM trigger pull, approximately 7 lbs.

USP models prior to 2005 will also need 209266 Trigger Rebound Spring.

Heckler & Koch P2000SK .357SIG barrel. Manufactured by the H&K factory in Germany. Designed to fit the P2000SK Sub-Compact. Barrel is 3.27" long.

Heckler & Koch P30 threaded barrel. Manufactured by the H&K factory in Germany. Designed to fit the full size 9mm P30. Threads are M13.5 X 1LH.

H&K P7 Cyinder Brush for all Heckler & Koch P7 models. Used to clean carbon deposits from the cylinder to keep your gun cycling properly. Manufactured by HK.

HK P7 Carbon Scraper for all P7 Series pistols. Authentic H&K factory tool. This tool is necessary to clean the carbon deposits and build up out of the gas cylinder to maintain proper function. Works with the P7 PSP, P7 M8, P7 M10 and P7 M13 models.