Hi, For sale or trade is a decent used condition KJW M4 GBB rifle. (Better photos will be uploaded soon) It comes with one mag. The only issue aside from the bolt not locking on the last round (very common on M4 GBBR's) is that the magazine sometimes drops free by itself when firing and can be removed without pressing the mag release if you pull hard enough. I'm not quite sure if it's because of the mag release being worn, or that part of the mag that catches on it is worn. Some filing might fix it, or maybe a new mag release, not sure. Highly interested in WE M4 type GBBR's, but will look at other trades as long as it's not an AEG, not co2, and not a Hi Capa.