ECHO1 / JG Golden Eagle 4.5" Metal Outer Barrel for M4 M16 Receivers
Measures 5.5 inches in total length with a 4.5 inch measurement from the receiver to the end of the threads.
14mm counter clockwise threaded.
Manufactured from zinc alloy.
Compatible with ECHO1, JG, Golden Eagle, and many other M4 M16 airsoft AEG receivers currently on the market.