HOW TO FIX KWA-MASADA GBBR BARREL EXTENSION SHACKING ISSUE
Some customers react the KWA MASADA GBB have some double feeding & jam issues. In fact, the most feeding issue is come from barrel extension will shaking... of course, the mag's lip have some issue too. (plz refer to KWA MASADA GBB mag's lip issue fixable page.)
T-N.T. sharing a simple method to solve this issue, let your KWA MASADA GBB always feeding smooth!!
1. Making a mark on the barrel extension before dissemble the barrel extension, then drill and tap. (3mm)
2.Install the barrel extension and PIN, push to the end and lock screw.