Partnership between CYMA CGS x Strike Industries, with EMG Licensing Full GBBR featuring Strike Industries Unique Furniture, Licensing and Markings Compact 4-inch Length Rifle Uses CYMA CGS System Internals Licensed Magazine by Lancer Systems Partial Parts Cross Compatibility with Tokyo Marui MWS Series Adjustable Trigger Pull M-LOK Rail Interface w/ Partial Picatinny Rail Aluminum Housing with Steel Internals Aluminum SI Oppressor, Forward Assist, Outer Barrel, Strike Rail 4-inch, Alloy Upper & Lower Receiver Steel Bolt Carrier, Fire Control, Hammer, Sear, Bolt Catch, Castle Nut, Take Down Pin, Trigger Pin Black / Black w/ Red Accents / Black w/ Blue Accents Finish This product is only compatible with gas designed specifically for Airsoft guns. Do not use lighter fluid or butane gas, as that will cause permanent damage.