T-N.T. Studio APS-X HOP-UP SYSTEM HOP-UP Retrofit Kit for KWA/KSC M4 GBBR (455mm) Category_EBB Magazine Suitable for H&K USP Compact

Suitable for H&K USP Compact Gas Blow Back GBB Pistol

Outer Barrel

Fits for KSC Vz

3-Round Burst & FULLY Automatic Shooting Mode

Come With 6 bullet Speed Loader

T-N.T. Studio APS-X HOP-UP SYSTEM HOP-UP Retrofit Kit for KWA/KSC M4 GBBR (455mm) Category_EBB Magazine Suitable for H&K USP CompactT N. T System APS X HOP UP SYSTEM HOP UP Retrofit Kit for KWA KSC M4 GBBR (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. T.