M-LOK compatible slots at 3, 6, and 9 o'clock positions; Increased firearm utility and control; High-strength polymer construction and threaded fastener; provides rigidity and stability without the need for a user-adjusted tensioning mechanism; Large muzzle-end hand stop similar to "K" style handguards; Aesthetics reminiscent of legacy MP5 furniture lines as reimagined by Magpul; Serves as 922(R)-compliant component for imported SP89/MP5K clones; Compatible with SP89 / MP5K and clones with 5" barrel