Heckler & Koch SL7
| Heckler & Koch SL7 | |
|---|---|
 Heckler-Koch SL7 rifle with 10-round magazine | |
| Type | Semi-automatic rifle |
| Place of origin | Germany |
| Production history | |
| Manufacturer | Heckler & Koch |
| Produced | 1980s - 1991 |
| Variants | H&K SL6, H&K 770 |
| Specifications | |
| Mass | 8.36 pounds (3.6 kg) unloaded |
| Length | 39.76 in (1010 mm) |
| Barrel length | 17.71 in (450 mm) |
| Cartridge | .308 Winchester, 7.62×51mm NATO |
| Action | Roller-delayed blowback |
| Rate of fire | Semi-automatic |
| Feed system | 3 or 10-round single column, detachable box magazine |
| Sights | Rotary rear aperture drum, hooded foresight |
The Heckler & Koch SL7 is a roller-delayed blowback operated sporting carbine made by Heckler & Koch. It was chambered in 7.62×51mm NATO caliber and designed and marketed throughout the world as a hunting/utility rifle.[1]
The SL7 is no longer manufactured, having been replaced by the Heckler & Koch SLB 2000.
Design and operation
The roller-delayed blowback action is similar to that used in the Heckler & Koch G3 battle rifle and is the hallmark feature of Heckler and Koch's pre-Heckler & Koch G36 line of small arms. The barrel features polygonal rifling with a right-hand 305 mm or 1 in 12 inches twist rate. The chamber is fluted with 12 longitudinal flutes extending rearward from the baffle to the chamber face. These flutes permit propellant gases to flow around the case acting as a lubricant to ease extraction. The SL7 has a diopter sighting system and utilizes Heckler and Koch's proprietary HK 05 claw-type scope mount. Two rectangular recesses have been cut into the upper receiver to accept this mount.
Variants
The H&K 770, a sporting rifle variant of the Heckler & Koch SL7, lacked the wooden handguard of the SL7 and was equipped with a longer barrel, open rear leaf sights, and sporting-style buttstock.
The Heckler & Koch SL6 is similar in appearance to the Heckler & Koch SL77, but is chambered for the 5.56×45mm NATO.[2]
References
- ^ Kokalis, Peter G. (June 1985). "SL6/7: Expanded Roles for HK's Compact Carbines". Soldier of Fortune magazine.
- ^ http://www.world.guns.ru/civil/civ022-e.htm
External links
| Lever delayed |  | |
|---|---|---|
| Roller delayed | ||
| Gas delayed | ||
| Hesitation locked | ||
| Flywheel delayed | ||
| Radial delayed | ||
| Toggle delayed | ||
| Vector delayed | ||