The NBS M-LOK Handstop is the perfect addition to any AR Build to maintain precision hand position on your rail. Ergonomic and low profile, this Handstop can be used in the harshest of conditions and can double as a barricade stop. The NBS Handstop is great for maintaining hand position on an SBR as well as improving accuracy and maintaining comfort on any build.Features: 6061-T6 Aluminum Mil-Spec MIL-A 8625 Type III Anodizing Doubles as a Barricade Stop 1.375" in Length 0.612" in Width 0.7" in HeightOutfit your next AR-15 or AR-10 with the NBS AR-15 M-LOK Handstop!