G&G Combat Machine CM16 SRXL Airsoft M4 AEG with Keymod Rail- 12", Red Edition! This AEG has several upgrades including a new shim job, barrel, hopup, and spring. The AEG is chrono'ing at 350 FPS. Included in the package is a lipo battery, hi-cap mag, metal rails for attachment, flash hider, and flashlight which does not work. This AEG has been very well maintained and is in optimal condition, and will be great for places like Tac City and so forth. I am selling it for 300$ OBO. Feel free to message with any questions or concerns, also if you'd like to test it before buying, that can definitely be arranged. Thank you.