Increase the fps/power of your rifle exactly to the legal limit of your field with the fps adjuster rings. You can put them on the spring guide to adjust the muzzle velocity of your sniper rifele
The rings are machined by CNC and the material used is a hardened stainless steel.
Compatible with all 13mm spring sniper rifles (Novritsch SSG24, Silverback SRS etc.)
One set includes:
2mm long ring + 4mm long ring + 6mm long ring
Outer diameter: 13mm
Inner diameter: 9mm
