LONEX Ultimate Upgrade Steel Spring Guide w- Ball Bearing Ver. 2

The exceptional design and material of this spring guide can easily counter the pressure of the gun spring when it contracts, by its spinning the shaft of the spring guide. This feature can also boost the effectiveness of the springs, and reduces the chance that the spring snaps during high speed movement. Lastly, it helps to reduce the resistance of the spring; thus, this allows the battery to last longer.