I have a really nice LWRC M6A2. The piston operation is very smooth and runs super cool compared to direct impingement rifles I have fired as a civilian and in the military. I also love the iron sights from LWRC that come with it that alone cost about $200. I am up for partial trades too in my favor since I wold really prefer cash. Text me at 4044024659 for faster response. Thanks for looking!