APS Spring 13mm - 120 Newton(SRS & TAC-41) SRS piston Inner diameter: 6

Inner diameter: 6

Choose your Air brake and start low

Pair with an Acetech chronograph or tracer to unlock powerful features like real-time chronograph monitoring

– SBA-BKB-04 – Bakelite bolt knob

APS Spring 13mm - 120 Newton(SRS & TAC-41) SRS piston Inner diameter: 6APS 13 mm, 120 Newtons spring 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 push mechanism) and all TAC 41. While being compressed at 99 mm in length, it delivers 120 Newton (+ 5%, around 9 Kg of force). This spring received a black electrophoresis coating, and a laser marking to quickly identify the spring.