Standard M4 stock / buffer tube for AEG's. Fully metal tube, castle nut and end cap. Comes with retaining bolt and screw. Completely hollow. Comes with stock position markings 1-5.
Length:165mm long (without end cap), 172mm (with end cap)
Outer Diameter: 29.3mm
Inner Diameter: 24.9mm
Please note, this isn't compatible with the SAEC / QDV2 system.