COWCOW A01 Thread Adapter - Gold HPA Tanks Lines & Regs Hi-Capa Hub bands can be

Hi-Capa Hub bands can be placed on the the bottom of your grips or they can be used on  M4 mags to help identify your mags

Semi Auto Only

* These only fit Gen 4 mag adapters

They are physical cards in a nice black envelope

Polarstar barb fitting with o-ring

COWCOW A01 Thread Adapter - Gold HPA Tanks Lines & Regs Hi-Capa Hub bands can beCowCows 11mm to 14mm thread adapter allows you to use a wider range of tracers and suppressors. These also accommodate the use of longer inner barrels to give you a FPS boost! Compatible with our outer barrels listed with an internal thread. Use with a 118mm Inner barrel on a 5. 1 for a flush fit.