Heckler & Koch HK 770 .308 Semi-Auto Roller Delayed Rifle & 3rd Mag, 1980
SOLD FOR: $1,700.00
LSB#: 241207AA216
Make: Heckler & Koch, Germany
Model: SL770
Serial Number: 07712
Year of Manufacture: 1980
Caliber: .308 / 7.62X51
Action Type: Roller Delayed Blowback, Semi-Automatic Fed By Detachable Magazines
Markings: The left side of the receiver is marked, “HK CHANTILLY VA / HECKLER & KOCH GMBH OBERNDORF/ N MADE IN W GERMANY / Mod. HK-SL770”. The barrel is marked, “07712” with a Nitro proof and the date code further down the barrel. The magazine is marked, “.234 .308”.
Barrel Length: 23”. Ported
Sights / Optics: The front sight is a raised post set atop a knurled base. The rear sight is a foldable square notch. There is a quick detach scope mount attached to the top of the receiver with a Pentax 4-12×40 scope in good condition.
Stock Configuration & Condition: The stock is a single piece checkered wood with a schnabel forend, sling stud, capped semi-pistol grip, monte-carlo stock, sling stud, and serrated plastic buttplate. There are light handling marks throughout. There are no cracks. There are small chips throughout. The checkering is sharp. The LOP is 13 3/4” from the front of the trigger to the back of the buttplate. The stock rates in about Verry Good overall condition.
Magazine Quantity & Condition: One x 3rd original magazine in Excellent condition.
Type of Finish: Blued
Finish Originality: Original
Bore Condition: The chrome lined bore is very bright and the polygonal rifling is unworn. There is no erosion in the bore but there is some light stubborn fouling. In this writer’s opinion the bore rates at a 9.5/10.
Overall Condition: This rifle retains about 95% of its metal finish. There is light operation wear. There are scratches and small nicks throughout with many concentrated on the receiver. The screw heads are sharp and the pins are unmarred. The markings are clear. Overall, this rifle rates in about Very Good to Excellent condition.
Mechanics: The action functions correctly. We did not fire this rifle. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.
Box, Paperwork & Accessories: One magazine.
Our Assessment: The Heckler & Koch HK 770 in .308 Winchester is a rare and highly sought-after semi-automatic sporting rifle that embodies H&K’s legendary engineering and precision craftsmanship. Built on the foundation of the company’s roller-delayed blowback system, the HK 770 offers exceptional reliability, smooth cycling, and outstanding accuracy. Unlike H&K’s military-style rifles, such as the G3 and HK91, the 770 was specifically designed as a sporting rifle, catering to hunters and precision shooters who desired a semi-automatic platform chambered in a full-power rifle cartridge. Its sleek, elongated profile and finely crafted wood stock give it a refined, traditional appearance, yet it retains the unmistakable durability and performance associated with Heckler & Koch firearms. One of the most notable aspects of the HK 770 is its roller-delayed action, which reduces felt recoil and allows for faster follow-up shots compared to traditional gas-operated designs. The rifle is equipped with iron sights but also features an integrated receiver-mounted scope rail, making it easy to mount optics for long-range accuracy. The .308 Winchester chambering makes it an ideal rifle for medium to large game hunting, offering both stopping power and long-range performance. The detachable box magazine allows for quick reloading, a feature uncommon in many traditional hunting rifles, making the HK 770 a unique blend of classic sporting rifle aesthetics with modern tactical functionality.
For collectors and shooters, the HK 770 is a rare and desirable firearm due to its limited production numbers and unique engineering. As a civilian-market sporting rifle that carries H&K’s battle-proven technology, it bridges the gap between military heritage and civilian practicality. The rifle’s robust construction, reliable action, and exceptional accuracy make it a standout choice for those who appreciate high-quality European firearms. Whether used as a hunting rifle, a precision target shooter, or as a prized addition to a collection, the HK 770 represents one of the finest semi-automatic sporting rifles ever produced by Heckler & Koch. -R.E.
