The LM4D bolt is made of sturdy nylon polymer and is a direct replacement for LM4D and LM4DÂ MLOK, and the updated Radian Model 1.
The bolt is the primary component of the most realistic gas blowback rifle available, and is the heart of the LM4’s Force Velocity gas system.
*Note: this is not compatible with LM4 PTR, LM4 RIS and LM4C*