Thousands of happy users use our springs in their Silverback SRS/Tac41, Novritsch SSG10, SSG96, SSG96, …
 
Made to comply with USA, Canada, Spain, Austria, and all other countries regulations with 2.8J sniper limit.
 
We remind you that J is measuring just with heavy bb´s and not with 0.2. Also your hop up need to be adjusted for best bb flight and not set to zero.
 
Springs are 13mm outer diameter, so they fit all above mentioned sniper replicas.
 
It comes with one spring guide spacer just for you to be sure you will hit your limit mark because not all setups are perfect.
 
Our springs are made in Europe with best spring wire on the market. Electroplated to prevent rust, reduce friction and give you prolonged period of usage compared to other springs.
 
Confirmed results of reaching 2.8 Joule with a standard SRS 16″ and SSG10 (430mm barrel). Joules may vary depending on the barrel length and piston used.
 
If the Rapax spring shoots too hot for your field, you can cut some coils without damaging the spring integrity as long as it is done properly. 
 
We recommend for you to use lithium or any thick grease on spring and spring guide.
If you have less Joules then you should just add spacer on a spring guide and you are good to go.
We remind you that J is measuring just with heavy bb´s and not with 0.2. Also your hop up need to be adjusted for best bb flight.
 
The first thing you will notice is a lighter pull compared to standard springs, in short: less effort for more joule.
 
All springs are the same length, use the same material, have the same number of coils, ect.
Tempering of these springs is made in a way to guarantee a long lifetime and very small FPS/Joule loss over time.
 
Springs are made in tight tolerances regarding diameter, they prevent the “twang” sound in airsoft sniper replicas.
 
Before you install it, put any grease to the spring or spring guide.