Samson has teamed up with East Coast AK Specialist, Ken Allen, to design and manufacture some great AK accessories such as this new M-LOK Handguard. It is comprehensive and user friendly, from the adjustable handguard alignment system to the different versions which accommodate a preferred sling attachment style. This new K-rail is a game changer.Features :EASY INSTALL5 sided M-LOK (with top rail M-LOK)Extended handguard length shields users hand from barrel and allows for more accessoriesAllows for optic mounting on top railWorks with factory gas tubeDoes not require removal of lower handguard retainerTwistable wedges in receiver block allow for rotation of handguard as needed for alignmentExtended lip index point allows you to feel when your thumb is getting too close to the gas tubeRecessed screws to prevent burns