Unlike our competitors we took our 28 years of experience tuning  shocks for some of the fastest desert racers in the world and applied it o the Stribog SP9a3! Introducing the 1st of its kind 3/8" to 1/2" shorter stroke recoil damper kit!  Since Grand Power release the 3000 plus serial number Stribog SP9A3 delayed blow back with the US Bolt lock system, recoil hasn't been much better then the SP9A1 which was really disappointing.  We spent countless hours applying our shock tuning skills to the recoil system trying different rubber compounds, dual rate spring set ups in 19 different rates and configurations only to end up with sub par results that were not worth calling a product.   In the end we were able to find a real solution to completely bring the felt recoil back down to the level of what a delayed blowback should feel like.  Even with high powered 115g (See video using 115g with a shorter 6" barrel vs a longer 8" barrel) it will give you HANDS DOWN the softest, flattest shooting, and because of the shorter stroke follow up shots are much quicker!  The only thing you feel is the energy of the round much like a higher end PCC like an MP5.  This kit was designed using a Factory  SP9A3 & SP9A3S with the factory Stribog lower & bolt stop & trigger (Do NOT use with ANY bianary triggers). Customer also use it in aftermarket lowers and in the SP9A1 Gen 2 but because the bolt is heavier it will not perform as well as it does in the SP9a3, but will out perform any other option out there! Note: Due to the slow down of the bolt you will notice that the bolt release just slightly harder to release when the bolt is locked back. This is 100% normal.  This is NOT to be used with an HBI buffer or any other buffer, other than the factory one that the spring rate is designed for. If you choose to do so you run a HIGH risk of having an out of battery detonation
PLEASE MAKE SURE THAT YOUR SHIPPING ADDRESS IS CORRECT IN YOUR PayPal  OR IT WILL SHIP TO WHATEVER ADDRESS YOU HAVE IT SET UP WITH
 
 
SP9a3 & SP9a3S Aluminum 2 Stage Damper Kit (2-3 Week Leed Time) 
Includes:
-One 3/8" CNC Machined Aluminum Spacer/Recoil Spring Carrier for 2 Stage Damper
-One Pad To Convert To 1/2" Stroke & To A 3 Stage Damper
-One Secondary Rate Spring
-One Washer
 
 
 
 
 
 
Terms & Conditions
NO Refunds or exchanges at anytime!  If you have any issues please contact us and I will do my best to help you.  By placing your order you agree to these terms! 
 
 
 
 
Disassembly & Install Instructions
 
Disassembly:
Compress spring
Remove spring cap and guide rod (Be careful! The Hollow rod is very thin & weak!)
Remove rod assembly from factory buffer and remove the little black washer inside the buffer
Remove the step down spacer from the stock buffer
 
Installation:
Press step down spacer into 3/8" spacer
Re install guide rod (Be careful!  The Hollow rod is very thin & weak!)
Install the new washer only as you will no longer need the small black washer 
Install the pad for 3 stage set up & 1/2" Shorter Stroke (Leave out for 2 stage and for 3/8" Shorter stroke)
Install the stock recoil spring
Slide secondary spring over the recoil spring all the way up against the the 3/8" spacer
Slide the factory buffer over the spring making sure that the larger deeper side of the hole faces the secondary spring
Once you slide it up against the secondary spring compress it all the way agaisnt the spacer to seat a portion of the spring into the stock buffer
Compress the recoil spring, then re install the guide rod end cap (Easiest way is to make sure the guide rod is fully extended then hold the buffer up against you chest in a slightly downward/horizontal position before compressing the spring. This allows the rod to stay extended so that you aren't fighting to compress the spring)
If you need any more assistance feel free to email me at kdgunwerx@gmail.com
Note: (Do NOT try to assemble the stock buffer after assembling the recoil spring guide rod end cap as it will not fit over it!  Do NOT drill out the stock buffer to try to fit it over a pre assembled recoil or you WILL ruin it! )