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ProWin Now offers the entire hop chamber unit for your favorite M4/M16 AEG
Available in Gold or Red Airtac Upper
Note: The Direct Attachment Front Cylinder and Adapter are sold as shown
Machined from a Milspec AR buffer tube blank
PolarStar Modular Regulator System (MRS) Configuration:w/ 42" Braided Air Line ProWin Now offers the entireThe PolarStar MRS (Modular Regulator System) threads directly onto your HPA tank, eliminating the need for a separate UFA and keeping your air rig profile to a minimum all in a package just 3 inches tall. Its integral on off valve lets you depressurize the system before unscrewing it from the tank, protecting tank threads and o rings from wear. An oversized 4mm piston bore delivers extremely high flow and refresh rate even at only 40psi, giving you
