Heckler & Koch SL7
The H&K SL7 is a roller-delayed blowback operated sporting carbine made by Heckler & Koch. It is manufactured in 7.62×51mm caliber. It was designed and marketed throughout the world as a hunting/utility rifle.
The SL7 is no longer manufactured, having been replaced by the H&K SLB 2000.
Read more about Heckler & Koch SL7: Variants