Heckler & Koch SL8-1 .223 Rem Semi-Auto Rifle, 20 in Heavy Barrel, 1999 Ulm-Proofed, Light Gray/Black
The HK SL8-1 is a German-made, civilian derivative of the G36 that keeps the short-stroke gas piston and rotating bolt system. This 1999 example (KK date code) features Ulm proof marks and a Heckler & Koch Inc., Sterling VA import mark. It is configured with light-gray glass-fiber-reinforced polymer furniture, a full-length top rail with factory adjustable sights, and a heavy 20-inch barrel with a recessed crown.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape. The exterior shows minor, superficial scratches and small blemishes. The bore is bright, clean, and shiny.
What’s Included
- Three factory Heckler & Koch SL8-1 proprietary single-stack polymer 10-round magazines marked "SL8-1 Kal..223 Rem."
Built around a glass-fiber-reinforced polymer receiver and furniture in light gray, the SL8-1 offers a rigid platform paired with HK’s proven short-stroke gas piston and rotating bolt. The configuration includes a thumbhole stock with an adjustable cheekpiece and buttpad spacers, plus a rear sling loop for straightforward carry options.
The forend is a rectangular gray polymer unit with an underside sling loop and accessory bushings. Sighting is handled by factory adjustable mechanical sights, front and rear, while the full-length top rail and scope mount provide a continuous mounting surface.
The 20-inch steel barrel is heavy-profile with a recessed crown and an unthreaded muzzle, emphasizing stability and clean muzzle protection. Safety is a 2-position selector. Length of pull measures 13.1 inches.
Feeding is via proprietary single-stack translucent SL8-1 magazines, with a stated capacity of 10+1. Overall length is 38.58 inches, and weight is 8.60 lb with magazine. German Ulm eagle/N and stag-antler proofs, along with the KK (1999) date code and HK Sterling VA import mark, are present and legible.