This version is for the KWA/KSC LM4 GBBR.
TDC Mod Hop Up works with .25g-.36g bb weights great for DMR set-ups. Best to use a upgraded bucking for heavier bb.
One piece design eliminates double feed issues. Tested 5000 rounds.
Designed and made in the USA using high quality materials 775 T6 Aluminum
Item No: SHALM4HOP
Probably should've done more research and RTFM before making the purchase instead of watching just the video, but some modification is required. this is NOT a direct replacement. What the video failed to mention was that the hop up tensioner/leaf that pushes against the top of the bucking needs to be modified.