Tienly Super Rotary AEG Bearing Spring Guide (V2 / V3) jlp-jl-progression Windage and elevation adjustment with

Windage and elevation adjustment with "click" type knobs

They are made from heat treated steel alloy bar stock with a scratch and blemish resistant black oxide finish

This will be necessary if you want the gun shipped back to you

- Metal housing and mounting

Single/3rd burst/Full Auto

Tienly Super Rotary AEG Bearing Spring Guide (V2 / V3) jlp-jl-progression Windage and elevation adjustment withTienly 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.