The finest grade barrel available!   Size:   RED 270mm Length x 9.5mm Outside Diameter x 7.5mm 350mm Length x 9.5mm Outside Diameter x 7.5mm 450mm Length x 9.5mm Outside Diameter x 7.5mm   BLUE 270mm Length x 9.5mm Outside Diameter x 7mm 350mm Length x 9.5mm Outside Diameter x 7mm 450mm Length x 9.5mm Outside Diameter x 7mm   Included: 1 x Fighting Bro Barrel

Give your blaster more of a punch!   Included: 1 x 1.4mm Steel Spring

Powerful yet subtle on the gears.     Included: 1 x 1.3mm Steel Spring

The best Piston available! Full metal rack with a single o-ring metal head.   Compatible: M4A1 Gen 8 Scar V2 MP5 V2 M249 Saw V3 M4A1 Gen 9 Kriss Vector V2 ACR J10   Included: 1 x Piston with Full Metal Rack and Head

Brass cylinder head, Brass Nozzle, Double O-Ring. What more could you ask for?    Compatible: This cylinder head is compatible with all blasters that use a Gen 8 and Gen 9 gearbox   Included: 1 x Brass Cylinder Head with Double O-Ring 1 x Nozzle

Looking at adding an 11.1v battery to your blaster? These standard metal gears will handle an 11.1v battery with ease.   Compatible: M4A1 Gen 8 Scar V2 MP5 V2 M249 Saw V3 M4A1 Gen 9 Kriss Vector V2 ACR J10   These gears are compatible with all blasters that use a Gen 8 or Gen 9 gearbox.   Included: 1 x Full Metal Gears Kit [18:1]