Product Description

Silverback Airsoft APS 13mm Type Spring for Desert Tech SRS/TAC-41 - M150

This spring is following the “APS 13 mm standard” (for 9 mm outside diameter spring guide). It will fit any rifle compatible with this standard, including all SRS (except the discontinued “push bolt” mechanism) and all TAC-41. While being compressed at 99 mm in length, it delivers 150 Newton (+/- 5%, around 9 Kg of force). This spring received a black electrophoresis coating, and a laser marking to quickly identify the spring.

Spring Velocity: (Dependent on barrel length)
16" / 420 mm Barrel: 509 FPS
22" / 578mm Barrel: 573 FPS
26" / 680mm Barrel: 576 FPS