M4 (KSC System7 Two) CNC Hardened Steel Enhanced Hammer (Stainless Steel Roller)

This hardened steel hammer is made by CNC process. It:
1) has 2 Japanese precision bearings to provide extreme smoothness rotation/movement;
2) increases the rotation/movement speed for better shooting performance;
3) has Stainless Steel wheel and polymeric buffer to maintain smoothness blow-back action;
4) protects the bolt from wear and damage;
5) strengthen construction and durability.

All products are for airsoft only.  They are not made for real steel firearms.