Samson AK47 M-LOK K-Rail QD Handguard Black 10.5 in. It is comprehensive and user friendly from the adjustable handguard alignment system to the different versions which accomodate a prefered sling attachment style. This new K-rail is a game changer.No gunsmithing required though you may need minor fitment or filing depending on your rifle. Specifications for Samson AK47 M-LOK K-Rail QD Handguard: Manufacturer: Samson Color: Black Finish: Type III Hardcoat Anodized Fabric/Material: 6061-T6 Aluminum Gun Make: Kalashnikov Gun Model: AK-47 Gun Rail: M-LOK Features of Samson AK47 M-LOK K-Rail QD Handguard EASY INSTALL 5 sided M-LOK (with top rail M-LOK) Extended handguard length shields users hand from barrel and allows for more accessories Allows for optic mounting on top rail Works with factory gas tube Does not require removal of lower handguard retainer Extended lip index point allows you to feel when your thumb is getting too close to the gas tube. Recessed screws to prevent burns Compatible with after market gas tube rails Package Contents: Samson AK47 M-LOK K-Rail QD Handguard Top Rail What firearm models does the manufacturer say Samson AK47 M-LOK K-Rail QD Handguard is compatible with? The manufacturer says that Samson AK47 M-LOK K-Rail QD Handguard is compatible with AK-47Samson 01-04041-01: AK47 M-LOK K-Rail QD Handguard Black 10.5 in