Tienly Super Rotary AEG Bearing Spring Guide (V2 / V3) Gearbox:V3 9"W x 3"H loop field

9"W x 3"H loop field on the front and back

Black Color Lacquer Coating

and for the extra flash factor

- 416A5 updated gas block

giving you even more freedom to expand your gun bag

Tienly Super Rotary AEG Bearing Spring Guide (V2 / V3) Gearbox:V3 9"W x 3"H loop fieldTienly 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.