T-N.T. Studio APS-X HOP-UP SYSTEM HOP-UP H+ Retrofit Kit for GHK AR Series (455mm) Category_Piston Kit - Solid fill structure at

- Solid fill structure at magazine release and trigger guard area

: A-HOP-H-CZ

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Provide more stable and durable standard for your pistol

which is also manufactured by Knight's Armament Co

T-N.T. Studio APS-X HOP-UP SYSTEM HOP-UP H+ Retrofit Kit for GHK AR Series (455mm) Category_Piston Kit - Solid fill structure atT N. T. Studio APS X HOP UP SYSTEM HOP UP H+ Retrofit Kit for GHK AR Series (455mm) Features : Simplify the original complex components. The inner barrel can be used T N. T. System all series of precision Air cushion inner barrel (O D 8. 5mm) H+ inner barrel(O D 9. 95mm), has been changed to a general specifications , to rid itself of special specifications. Improve the original innerbarrel rotation problems , improve the stability of shooting. T N.