JMac Customs MMS 5 Slot AKM Optic Mount Black. This optic mounting solution requires no modification and works with any optic utilizing a MIL-STD-1913 base. The 5-lug 1913 optic mount will co-witness with factory AKM pattern iron sights when the optic is removed and does not inhibit the user from field-stripping their firearm once installed. The HG-OM-1913-5 is designed for a max rear sight block width of 0.89 compatible with most kalashnikov pattern firearms. Specifications for JMac Customs MMS 1913 5 Slot AKM Optic Mount: Manufacturer: JMac Customs Color: Black Finish: Anodized Fabric/Material: 7075-T6 Aluminum Weight: 2.7 oz Condition: New Package Contents: JMac Customs MMS 1913 5 Slot AKM Optic Mount JMac Customs HG-OM-1913-5: MMS 1913 5 Slot AKM Optic Mount Black