King Arms PDW 9MM SBR M-LOK Tommy Thanks to the initial initial

Thanks to the initial initial outlet velocity of  ~ 425 FPS  guaranteed by a factory-mounted main spring

Steel Bearings

Full Metal Double O-ring Cylinder Head

this new M870 also has 3 inner barrels

King Arms PDW 9MM SBR M-LOK Tommy Thanks to the initial initialKing Arms PDW 9mm SBR M LOK Black1. Tactical handguard King Arms Short Barrel Rifle PDW series available in different length of handguard constructed by high quality nylon fibre or aluminium. It is providing picatinny or MLOK rail system for customer preference. MLOK handguard version comes with 3 pieces of picatinny rail sections for shooter bolt on their accessories. 2. Barrel Metal made outer metal to avoid wobbling. It also protects the well