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Stock length adjustment: 0/+1/+2/+3 cm out of the box
TAC-41 Hopup unit
This rail covers the full length of the receiver and short handguards (Aluminum
It allows you to build a RMR Red Dot on the AAP-01 and still be able to use the Kraken AAP-01 External adjustment hop-up wheel
Which makes your TAC41 just a little quieter
APS Spring 13mm - 120 Newton(SRS & TAC-41) crafting kit Stock length adjustment: 0/+1/+2/+3 cmAPS 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.