JMac Customs 1913 Adapter for Most AK Pistols Hardcoat Anodized Black. It can also be installed on most AK pistols by simply drilling and tapping your rear trunnion.Bolt:M10x1.58.5mm drill size for tapIt has a lip on the bottom that prevents it from rotating when installed.Note that installing a stock on a pistol makes it an SBR make sure to follow all local state and federal lawsNot compatible with SAM7K-34. Specifications for JMac Customs 1913 Adapter for Most AK Pistols: Manufacturer: JMac Customs Condition: New Color: Black Gun Make: Kalashnikov Gun Type: Rifle Fabric/Material: 7075-T6 Aluminum Mount Type: AK Mount Features of JMac Customs 1913 Adapter for Most AK Pistols 1913 Adapter for Most AK Pistols Package Contents: JMac Customs 1913 Adapter for Most AK Pistols JMac Customs RSA-AKP: 1913 Adapter for Most AK Pistols Hardcoat Anodized Black