Estimated FPS output – 459fps
(verified owner) – August 20, 2019
Verified review - view original
Great product. Very happy with the joule output on my aeg with this spring.
(verified owner) – October 5, 2019
Excellent quality and easy to install!
(verified owner) – October 1, 2020
Performs great in my Kyrtac SPR
(verified owner) – October 18, 2020
Great quality spring bit to strong but will also keep for another build haha
(verified owner) – December 14, 2020
(verified owner) – May 11, 2021
No complaints whatsoever
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