Tienly Super Rotary AEG Bearing Spring Guide (V2 / V3) Gearbox:V3 and for the extra flash

and for the extra flash factor

- 416A5 updated gas block

Incredible 38 rounds per second fire rate out of the box (48 round per second upgrade motor coming soon)

1x 16 inch Mid-length Outer Barrel

Very good for speed in mind

Tienly Super Rotary AEG Bearing Spring Guide (V2 / V3) Gearbox:V3 and for the extra flashTienly bearing spring guides feature high quality ball bearings which allow the spring to rotate during compression and release freely. This alleviates binding of the spring and alleviates torsional strains on the spring leading to more consistent FPS. The inherent thickness of the ball bearing assembly will also act as a spacer for the spring, mildly increasing FPS.