GHK M4 Original Part# M4-15 (non-assembled version) [Code: M4-15-NA]
Retail Price: 19.99
The GHK M4 original part #M4-15 is the original part designed to work with the M4 GBBR. This is a non assembled part so it can be used to completely replace the stock parts or you can use it to replace standalone parts.