The popular product in 2022 launched by T-N.T. STUDIO: WEPSTAS upgrades HOP chamber set, which changes the original two-piece design into one piece, and uses  jimi screws on both sides to fix the inner barrel, and also corrects the loading position, coupled with the design of positioning nub, makes the shooting performance more stable. The adjustment ring is changed to aluminum alloy material, which is more durable and not easy to loosen, which is convenient for quick adjustment of HOP-UP. The installation steps are simple and fast, with the latest H.L.R. bucking and S+ precision dual inner diameter eclipse inner barrel, the excellent bucking with the S+ barrel, the shooting performance is even more better.

​FEATURES :
•Fixed the BBs loading position, and the shooting performance is more stable.
•Fixed the issue that the adjustment ring is very easy to loosen: the adjustment ring is made of aluminum CNC, covering an angle of more than 180 degrees, and the size is accurate.
•Adopt stepless adjustment, which can be adjusted in detail and correspond to more types BBs. 
• The inner barrel is fixed with both sides jimi screws, steady without shaking.
• Set included T-N.T. new H.L.R. bucking, gives BB more efficient and stable topspin.
●Positioning nub designs, wider pressing area which can better exert the bucking performance.

SUITABLE MODEL：
WE PDW ( EMG KAC PDW-M2)
WE SCAR-L
WE SCAR-H
WE THOMPSON
WE AK74
WE AK-PMC
WE SVD

Using with  S+ precision dual inner diameter eclipse Air-cushion inner barrel, not only excellent air-seal, shooting performance is even more better!! 

​※ It is recommended to apply a little screw glue before tightening the screws, and please don’t tighten them too much to avoid deformation of the inner wall ※

※All retrofit kits are assembled by our professional technicians, but there may still be slight tolerances between different batches of airsoft guns. It is recommended that you must have relative DIY ability before purchasing.※