Arsenal Inc's SGL21-94 was a US-assembled rifle built on genuine Russian IZHMASH-manufactured AK-100 series receivers imported as sporting rifles before additional import restrictions closed the pipeline. The SGL21 designation indicates a modified thumbhole stock configuration for US importation; most buyers converted them. These are considered the highest-quality Russian-manufactured AK pattern receivers ever widely available to US civilians. Type: Rifle Action: Semi-Automatic Caliber: 7.62x39mm Capacity: 10 Year introduced: 2009, Bulgaria Weight: 128 oz Overall length: 37.5" Status: Discontinued Military use: Yes Intended use: sporting, collector