Modify - Bore-up Cylinder Set for M4-A1/RIS/SR16/M733 AEG series - GU-01-22

The Modify Bore Up Cylinder Set for the M4 series has all the necessary parts to upgrade the cylinder assembly of any M4 series gearbox. The Cylinder Set includes a bore up cylinder head, bore up air seal nozzle, bore up aluminum cylinder head, and bore up cylinder. Modify series of upgrade parts are compatible with most major brands of AEG. You can expect the same level of quality from these parts as Guarder and Systema parts for a fraction of the price.

Package Includes:

• Stainless Bore-Up Cylinder Head
• Bore-Up Air Seal Nozzle
• Bore-Up Ventilation Piston Head
• Bore-Up Chromium Plating Cylinder