Like its 5.56 mm counterpart, the MR762A1 is a direct descendent of the HK416/417 series, only in a semi-automatic rifle configuration developed for civilian users. Using the HK-proprietary operating system, the MR762A1 is gas operated and uses a piston and a solid operating “pusher”rod in place of the common gas tube normally employed in AR15/M16/M4-style weapons.
Pioneered by Heckler & Koch in the G36, HK416, and HK417; this method virtually eliminates malfunctions common to direct impingement gas systems since hot carbon fouling and waste gases do not enter the receiver area. The MR762A1 stays cleaner, reducing heat transfer to the bolt and bolt carrier, and drastically reducing wear and tear on other critical components. The service life of all parts is increased substantially.
The MR762A1 uses a barrel produced by Heckler & Koch’s famous cold hammer forging process. This manufacturing process uses the highest quality steel, producing a barrel that ensures superior accuracy, even after firing thousands of rounds. The MR762A1 is produced at Heckler & Koch’s American manufacturing facilities from both American and German-made components.
The MR762A1 uses many of the assemblies and accessories originally developed for the HK416/417 series including adjustable buttstocks, ergonomic pistol grips, mechanical sights, and either the HK Modular Rail System or the HK free-floating four-quadrant rail system/handguard.
These MIL-STD-1913 “Picatinny”type rail systems/handguards allows all current accessories, sights, lights, and aimers used on M4/M16-type weapons to be fitted to the MR series. The HK rail systems can be removed without special tools by the user and ensures 100% return to zero when reinstalled.
With both the HK Modular Rail System (MRS) and the Free Floating Rail System (FFRS), the barrel does not touch the handguard, ensuring the barrel/handguard relationship is truly free-floating for maximum accuracy. The MRS handguard was added in 2016 and has many of the features found on the FFRS but with a more ergonomic design. It uses an HK proprietary keyhole design to allow the attachment on Picatinny rail segments to the handguard for the installation of accessories.
Ambidextrous operating controls are standard on the MR762A1, including a convertible charging handle and an ambidextrous selector lever. The MR762A1 uses the same 10- and 20-round translucent polymer box magazines made for the HK417; a 5-round magazine is also under development. MR762A1 rifles are well-suited for a variety of applications including law enforcement tactical, police patrol, general sporting, and hunting (a 5-round magazine is under development).
Introduced in January 2012, the MR762A1’s Suggested Retail Price is $3,995.
Highest Quality Steel
|Caliber||Stock Extended Length||Stock Retracted Length||Width||Height||Barrel Length|
|7.62 x 51 mm||39.10 in.||35.94 in.||3.23 in.||8.39 in.||16.50 in.|
|Caliber||Rifle (with empty 20 round magazine)||Magazine (empty 20 round magazine)|
|7.62 x 51 mm||9.84 lb.||.34 lb|
|Caliber||Magazine capacity||Trigger Pull||Barrel Profile||Sight Radius||Sights||Stock|
|7.62 x 51 mm||10 or 20 rounds||4.5–5.6 lbf /20–25 N (two stage trigger)||4 lands & grooves, right-hand twist, 1 in 12 in.||16.14 in.||variety of optional sights available||adjustable 5 positions|
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