I have a new in box LWRC carbine rail system. I ordered this one, then found a deal on a Daniel Defense that I really wanted. These are great, rock solid systems with a quick detach top section (designed so you can work on piston guns). It has a QD socket on each side. Asking $120obo, or trade. I need AR mags (20 and 30rd), 223/556 ammo, 1911 mags, 45 ammo...but open to trades.