T-N.T APS-X Hop Up Chamber Kit with TR-Hop Buck for S&T Kar98k 

T-N.T. STUDIO's popular products: S&T Kar98K (for old ver. Kar98K) upgrade HOP chamber, internal upgrade six-piece set, completely improve and strengthen the overall shooting performance and smoothness sense of operation.​
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Features :
●S&T Kar98K upgrade HOP chamber (for old ver. Kar98K)
Aluminum CNC one-piece HOP chamber, full-covered HOP bucking design, more better air-seal. HOP lever joined T-N.T. original HOP positioning nub design, enlarged HOP pressure area, standard using TR-HOP VSR bucking and S+ precision dual inner diameter eclipse air-cushion inner barrel, the shooting performance is greatly improved!!
●S&T Kar98K internal upgrade kit
Effort-saving springs / Aluminum lightweight pistons / Steel spring guide / Steel cylinder heads / Steel correct angle sear / Steel spring guide stopper, improve the strength and service life of each component.

Content:

●T-N.T. - TR-HOP bucking / S&T Kar98k / 60° *1

●T-N.T. - S&T Kar98k HOP chamber assembly *1

※Only suitable for 2019 old version S&T Kar98k, not suitable for Another ver.