Samson Manufacturing Corp. Low Profile Hand Stop, Fits M-LOK, Anodized Finish, Black 04-01040-01 Introducing the Samson Low Profile M-LOK Hand Stop. It's contoured to provide a more comfortable interface with your hand" and easily doubles as a barricade stabilizer. The slim design takes up less space on your handguard for a more minimalistic approach" but still provides all the handy features you need.