LMT Rear BUIS for Surefire 6P or G2L

I have a LMT rear BUIS that is just gathering dust in my safe and would like to trade it for something I could use. I would like a Surefire 6P or G2L. Would actually prefer the 6P. Would also consider a plain G2 if it has a quality LED drop-in. I apologize in advance for my poor photography skills but hopefully you can see it’s still in great condition. It was on my rifle for maybe a month until I got a flip-up one and has since been in the safe for about a year or two.

Also the sight is already set up for the LTC Chuck Santose improved battlesight zero. You can read about it here.
http://grburnett.us/guns/ImprovedBattlesightZero.pdf

Thank you for your time,
CHoffman