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ProWin M4 Hop Up Chamber

The ever famous ProWin hop up chamber for M4/M16 AEGs. Hailed as one of the best units out there for shot to shot consistency and ultimate air seal. ProWin is known for their CNC'd airsoft parts which have proven time and time again to be higher quality and more durable than other cast options on the market. With it's 1-piece design, rotary style dial, and consistent quality this is one of the best options on the market to upgrade your hop up chamber with.

The rotary style dial is significantly more superior compared to your standard 3 gear hop up system on M4s. The wheel with o-ring allows for the unit to hold your hop up nub in place to get that next level consistency every time you pull the trigger without backing off over time.