CYMA PLATINUM M4 M-LOK 2 mags optional battery OPTIONAL EOTECH Holographic sight Only change I made was the awful trigger it comes with now its amazing other than that 100%stock. The eotech is on a riser but both are removed in like 15 seconds easily Reccomend you go with my battery because I had a thing where it shoots bursts if you use higher voltage bstteries and this one worked nicely