DFCO Full Hand Stop Black Type III Anodize. It's a finger stop. It's a barricade stop. It's the FULL STOP. Use it as you please. Just look good doing it. Specifications for DFCO Full Hand Stop: Manufacturer: DFCO Color: Black Base/Mount Type: QD Mount Fabric/Material: 6061-T651 aluminum Length: 1.3 in Width: 0.6 in Height: 1.36 in Mount: M-LOK Size: One Size Finish: MIL-A-8625 Type III Hard Coat Anodized Gun Rail: M-LOK Features of Die Free Co Full Stop Hand Stop Blue Loctite recommended Bias the Full Stop toward the rear of the firearm engaging the M-LOK's rear recoil lug with the M-LOK slot. Using a 3/32 Allen bit torque to 25 in-lbs (max 35 in-lbs) Package Contents: Die Free Co Full Hand Stop DFCO FULLSTOPMLOKBLK: Full Hand Stop Black Type III Anodize