Looking to trade my A&K M249 Mk.2 for an Mk.18 style M4. It has an the lower rail and the box mag still feeds/functions flawlessly. Would really like a Mk.18 style M4. Gun must have a metal body, other than that I'm really open to anything. If you make a shitty offer you will be ignored. I can get pictures if you're interested or you have an offer. I will post pics if there is interest.
This is an example of what I'm looking for:
Thanks.