SRS Power Up Rings

Power up rings used to increase the spring tension and increase the joule output. For use with the stock spring guide and others with the same dimensions such as the vrag. Should also fit wasp and edgi guide aswell as other similar rifles. 
To be installed on the spring guide between the base and the spring, as shown in the images. 

Set includes 4 incremental sized rings of 1mm, 2mm, 4mm and 8mm, meaning  fine adjustment is possible with any size up to 15mm using different stack combinations, allowing small increases to customise your setup as close to the field limit as possible.

Parts are machined in house from stainless steel, so they are rust resistant and durable.

Designed to fit stock Silverback pistons and others using the same dimensions. However should fit any sniper thst uses a 9mmx13mm spring. 

DIMENSIONS:
9.5mm ID, 12mm OD

Example of approximate power increase tested on my SRS
(Disclaimer: Your setup may have very different results based on piston weight, BB weight,barrel length and many other factors, so please take the below values as a very rough guide only)
No rings:  2.0j
4mm:        2.1j
8mm:        2.25j
15mm:      2.4j 

 
Depending on spring length, adding too many rings may cause your sear not to engage, in which case, a more powerful spring and fewer rings would be required. 

For other piston guides please measure to ensure fitment.