The Arsenal SLR-106F is a 5.56x45mm stamped-receiver AK-pattern rifle in Arsenal's SLR commercial line. The 5.56x45mm AK — based on the Bulgarian AR-M9F military rifle — uses Bulgarian-manufactured AK-74-pattern stamped receiver blanks adapted for the NATO cartridge. The SLR-106 designation separates it from the 7.62x39mm SLR-107 line. NATO-standard magazines are not compatible; the SLR-106F uses proprietary AK-pattern 5.56mm magazines. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm Capacity: 30 Year introduced: 2006, USA/Bulgaria Weight: 75.5 oz Overall length: 35.5" Status: Active Intended use: sporting, nato_compatibility