H&K SLB 2000 Although more famous for their tactical firearms, H&K did produce a short line of civilian hunting rifles for the European and U.S market. The SLB 2000 is a semi-auto rifle that can come chambered in .308, 30-06 and .300 Win Mag. Uses 2 or 5 or 10 round detachable magazines. The 2 rounder sits flush with the receiver, the 5 and 10 extended a little further out. No longer in production, spare parts and magazines are difficult to find.