Heckler & Koch HK MR762 A4 7.62mm NATO Semi-Auto Rifle, 16.5" Barrel, Matte Earth-Toned Finish, 3x 20rd Mags
This Heckler & Koch MR762 A4 is a recent-release, U.S.-made 7.62mm NATO semi-automatic rifle built on the AR-10 platform with HK’s gas-operated short-stroke piston system. It is receiver-marked “MR 762 A4” and “Heckler & Koch Inc. / Columbus, GA,” and features a free-float-style handguard with M-LOK–type slots plus a full-length, numbered, continuous top Picatinny rail. The rifle is paired with an HK-branded soft rifle case and three HK “Genuine Accessory” MR762 20-round magazines, including two sealed in HK packaging labeled “Made in Germany.”
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection (see photos).
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
What’s Included
- HK-branded soft rifle case (HK logo visible)
- 3x HK “Genuine Accessory” MR762 20-round magazines (two sealed in HK packaging labeled “Made in Germany,” part number 234708S)
Chambered in 7.62mm NATO (7.62x51) with a 16.5" barrel, this MR762 A4 is configured as a semi-automatic, gas-operated short-stroke piston rifle. The adjustable gas regulator is marked with “N” and “S,” with the markings visible on the rifle.
The receiver is finished in a matte earth-toned color and is marked “HK,” “MR 762 A4,” “7.62 mm x 51,” and “Heckler & Koch Inc. / Columbus, GA.” The serial number is marked on the receiver; this example is from the “242-” prefix series.
Up top, the rifle uses a full-length continuous Picatinny rail with numbered slot indexing, providing a consistent reference for mounting and returning accessories to the same position. The handguard is a metal, free-float-style design with M-LOK–type slots and a listed rail length of 23.0.
This configuration includes a polymer, collapsible/telescoping stock with a 12.0 length of pull and an HK-marked pistol grip. It ships with three 20-round MR762 magazines and is set up for a stated capacity of 20+1.