Retro Arms - M4/M16 - Hop-Up Unit

Sale price$ 39.95

Pickup currently unavailable at Gilbert Arena


  • High performance
  • Increased air seal and durability
  • Threaded Stabilizing Ring
  • Rotary style hop-up unit
Part Number 90801
Material Metal Alloy
Color Silver or Black (depending on the batch)
Manufacturer Retro Arms
Compatibility TM and other comparable M4/M16 AEG

NOTE: If you have a Polarstar in a VFC body, get one of these if you are having feeding issues, it will work the best and is what Polarstar recommends. 

DISCLAIMER: Please use discretion when installing custom parts as fit and compatibility may vary. Some modification may be required. Professional installation recommended.

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