ProWin CNC HopUp chamber for M4
ProWin HopUp chamber. CNC Machined M4 HopUp chamber. Made of Aluminium. Improve sealing. Include all parts , but without HopUp rubber.
ProWin is a Hong Kong based company that produces upgrade parts for the AEG and GBB platform, using machining techniques to upgrade and improve on parts that come stock with guns. They are mostly known for their unique hop-up chambers, as they are both effective and stylish, giving a nice anodized finish, which is attractive to many airsofters. Their line of GBB upgrade parts are also popular, again using machining techniques to create a variety of parts like nozzles, magazines and firing pins.