Heckler & Koch HK SL6 .223 Semi-Auto Roller Delayed Rifle W/ 4rd Mag, 1983
SOLD FOR: $1,375.00
LSB#: 241207AA219
Make: Heckler & Koch, Germany
Model: SL6
Serial Number: 07777
Year of Manufacture: 1983
Caliber: .223
Action Type: Roller Delayed Blowback, Semi-Automatic Fed By Detachable Magazines
Markings: The left side of the receiver is marked, “HK ARLINGTON VA 22 201 / HECKLER & KOCH GMBH OBERNDORF/ N MADE IN W GERMANY / Mod. HK-SL6”. The barrel is marked, “07777” with a Nitro proof and the date code further down under the handguard. The magazine is marked, “.223 / .222”.
Barrel Length: 17 3/8”.
Sights / Optics: The front sight is a hooded post. The rear sight is a rotating drum adjustable diopter sight marked out to 4.
Stock Configuration & Condition: The stock is a two piece wood set with a forend cap/sling loop, vented top handguard, semi-pistol grip, straight comb, sling bar/well, and steel buttplate. There are light pressure dents, scratches, and nicks throughout. The gloss finish has some small spots of chipping, there are no cracks. The LOP is 13 3/4” from the front of the trigger to the back of the buttplate. The stock rates in about Very Good overall condition.
Magazine Quantity & Condition: One x 4rd 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. In this writer’s opinion the bore rates at a 10/10.
Overall Condition: This rifle retains about 97% of its metal finish. There is light operation wear. There are light scratches and small nicks throughout with some rub marks around the scope mounts. The barrel extension has turned to a deep plum color. 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, original leather sling.
Our Assessment: The Heckler & Koch SL6 is a rare and highly sought-after semi-automatic rifle, featuring H&K’s renowned roller-delayed blowback system, which provides exceptional reliability and smooth cycling. Chambered in .223 Remington, this rifle was designed as a civilian sporting variant of the HK33, offering the legendary durability and precision of H&K’s military firearms in a sporting package. The SL6 is compact, well-balanced, and built to exacting German engineering standards, making it an outstanding option for target shooting, hunting, and collecting. One of the standout features of the SL6 is its roller-delayed action, a hallmark of H&K rifles that allows for efficient recoil management and consistent performance, even with high-volume shooting. The rifle’s cold hammer-forged barrel ensures excellent accuracy and longevity, while its wood furniture and sleek design give it a unique and classic appearance that sets it apart from other semi-auto rifles. The integrated rear diopter sight provides precise aiming adjustments, further enhancing the rifle’s already impressive accuracy.
For collectors and H&K enthusiasts, the SL6 represents an exceptional blend of military-grade performance and civilian accessibility. Its limited production numbers, distinctive design, and use of the roller-delayed blowback system make it a prized addition to any firearms collection. Whether valued for its engineering pedigree, smooth shooting characteristics, or collectible rarity, the H&K SL6 remains a premier example of Heckler & Koch’s legacy of innovation and craftsmanship. -R.E.
