T-N.T. Studio APS-X HOP-UP SYSTEM HOP-UP H+ Retrofit Kit for GHK AR Series (455mm) Category_Piston Kit Feature of the Laser:

Feature of the Laser:

Material: Low-Carbon Steel/Thermal Treatmenl 35°

-Material: Aluminum alloy

so nothing more is needed when you applying to your gun

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 Feature of the Laser:T 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.