Maxx Model CNC Aluminum Hop-Up Chamber for M4E Airsoft AEG Rifles (Model: M4E) Barrels If you're not sure

If you're not sure

VISM™ TACTICAL 3 DAY PACK

These are really neat

even in case of reverse polarity

TTI Upgraded Hop Up Chamber WE Galaxy 1911

Maxx Model CNC Aluminum Hop-Up Chamber for M4E Airsoft AEG Rifles (Model: M4E) Barrels If you're not sureFeatures Hop up for standard AEGs with standard AEG inner barrels (Newest Gen.) Machined from a solid aircraft aluminum block with tight tolerances to provide better accuracy, consistency, and durability Precision rotary dial design for fine hop up adjustments Re engineered the hop up levers and nubs to work best with R hop, Flat Hop and Standard Hop to keep the BBs shooting straight and accurate on every single shot Accepted the nozzle length from