A direct descendant of the HK416 the MR556A1 is a semi-automatic rifle configuration with match rifle capability developed for civilian users. he MR556A1 uses the HK proprietary gas piston operating system employing a piston and a solid operating pusher rod which virtually eliminates malfunctions common to direct impingement gas systems since hot carbon fouling and waste gases do not enter the receiver area. The HK Modular Rail System (MRS) is truly free-floating for maximum accuracy. The MRS handguard has a more ergonomic design yet retains many features from the previous FFRS. It uses an HK proprietary keyhole design to allow the attachment of Picatinny rail segments to the handguard. The MR556A1 also has a Picatinny rail machined into the top of its upper receiver for mounting optics and mechanical sights. Major subassemblies including the upper receiver/barrel assembly are fully interchangeable with other high quality AR-style firearms. The MR566A1 is produced in the USA from both American and German-made components. The German-made unchromed barrel is produced by HK's famous cold hammer forging process with the highest quality steel for a barrel that provides superior accuracy and long service life.This model is CA-compliant. It is supplied with a 9 MRS handguard Troy Microsights and one 10-round magazine with HK's Raddlock configuration.
HK MR556FMA1 5.56 16.5 RADLK *CA*10R
Mfg Item Num: MR556FMA1
Model Number: MR556
Purpose: Personal Protection/Sport
Series: A1 with Raddlock *CA Compliant*
Unit of measure: GN
Action: Semi-Automatic
Caliber: 223 Remington/5.56 NATO
Barrel Length: 16.5
Capacity: 10+1
Trigger: Two-Stage
Safety: Ambidextrous
Weight: 8.6 lbs
Stock Description: Synthetic Black
Receiver Material: Aluminum
Sights: Rail Mounted Front and Rear
Barrel Description: Cold Hammer-Forged
Twist: 1:7
Barrel Length Range: 16.00 to 17.99
Weight Range: 8.00 lbs to 9.99 lbs
Hand: Right
Stock Finish Group: Synthetic
Metal Finish Group: Blued/Black
HK MR556FMA1 5.56 16.5 RADLK *CA*10R
Mfg Item Num: MR556FMA1
Model Number: MR556
Purpose: Personal Protection/Sport
Series: A1 with Raddlock *CA Compliant*
Unit of measure: GN
Action: Semi-Automatic
Caliber: 223 Remington/5.56 NATO
Barrel Length: 16.5
Capacity: 10+1
Trigger: Two-Stage
Safety: Ambidextrous
Weight: 8.6 lbs
Stock Description: Synthetic Black
Receiver Material: Aluminum
Sights: Rail Mounted Front and Rear
Barrel Description: Cold Hammer-Forged
Twist: 1:7
Barrel Length Range: 16.00 to 17.99
Weight Range: 8.00 lbs to 9.99 lbs
Hand: Right
Stock Finish Group: Synthetic
Metal Finish Group: Blued/Black
