Our Enhanced M-LOK (EM) Handguards provide a lightweight free float design for your custom AR15 build. The M-LOK system allows advanced modularity past the current 1913 picatinny rail system. Machined to mil-spec dimensions and engineered to perfection, this handguard eliminates bulk while retaining strength and stability.Features:1pc free float designBuilt in anti-rotation tabsScalloped railsContinuous top rail1.72" inside diameter (from barrel nut cut to forward end) fits most muzzle devices and 1.5" suppressors1.78" inside barrel nut cut area diameterCompatible with low profile gas blocks