A great custom upgrade / modified / reinforced spring guide for your EMG M1919, M249 series Airsoft AEG by Classic Army, A&K and other compatible models or AEG that uses A&K OEM / Gearbox.
Features:
- CNC machined construction
- Anodized red finish
- Aluminum alloy construction
- For use with Retro Arms M249 QSC gearbox