Retroarms stainless steel Cylinder type:Cylinder D 2 Gear Box

2 Gear Box

The vale pin lock is more durable and stable than the traditional design

thanks to the top-mounted compartment that allows for easy access without removing the sight from your blaster

and a fuller tactical picture than standard iron sights

Black Widow Gearbox Spring Retainer V2

Retroarms stainless steel Cylinder type:Cylinder D 2 Gear BoxRetroArms Cylinders are CNC out of high quality superior stainless steel. Super smooth on the inside so your piston O rings stay healthy and dont get cut up from unwanted burs. Cylinder A 72mm inner Barrel 130 239mm Cylinder C 72mm inner Barrel 290 369mm Cylinder D 72mm inner Barrel 370 469mm Cylinder E 81mm inner Barrel 470 650mm