![[ARES] Amoeba Striker C.P.S.B. Upgrade Spring - 550](http://www.sixmm.com/cdn/shop/products/eng_pl_AS-SP500-Tuning-Spring-for-Amoeba-Striker-Replicas-1152215575_1_2b262c1b-6c52-4951-bf9d-e601a4ab8f11.jpg?v=1614058658&width=1200)
![[ARES] Amoeba Striker C.P.S.B. Upgrade Spring - 550](http://www.sixmm.com/cdn/shop/products/eng_pl_AS-SP500-Tuning-Spring-for-Amoeba-Striker-Replicas-1152215575_1_2b262c1b-6c52-4951-bf9d-e601a4ab8f11.jpg?v=1614058658&width=450)
![[ARES] Amoeba Striker C.P.S.B. Upgrade Spring - 550](http://www.sixmm.com/cdn/shop/products/eng_pl_AS-SP500-Tuning-Spring-for-Amoeba-Striker-Replicas-1152215575_1_2b262c1b-6c52-4951-bf9d-e601a4ab8f11.jpg?v=1614058658&width=4096)
Send complet false model, not like in the photo :( an became only 50% cash back
Got two of these from Sixmm. One went into a ASG M15 URX-SBR, the other into Specna Flex M4. Simple fit with no modifications required. Easy reroute of power cable to rear (channel part of gearbox) into PDW stock, Specna required a little extension to get to end of buffer tube. 1.14J on 90 PSI on 6.02 x 230mm barrel. 16 rps. Excellent, affordable, super quiet and responsive trigger.
The part is lightweight well made and comes with 2 buffers a good product for speed or for winter use