6.04 Crazy Jet Inner Barrel for GBB 540mm

6.04 Crazy Jet Inner Barrel for GBB 220mm

6.02 Inner Barrel for GBB 410mm

6.03 GBB Inner Barrel 210mm

6.04 Crazy Jet Inner Barrel for GBB 245mm

6.03 GBB Inner Barrel 117mm

6.04 Crazy Jet Inner Barrel for GBB 250mm

6.04 Crazy Jet Inner Barrel for KWA M4 GBB 440mm

6.02 Inner Barrel for GBB 290mm