Excellent rear back up sight - Magpul Industries MBUS Pro Flip Up Sights

I bought this rear sight to replace my polymer MBUS. I wanted a more low profile sight and man this one did not disappoint! It is much more compact than the Gen 2 MBUS. It snaps into the open and the closed position with an authoritative click. I like that it doesn't lock open, just in the off chance I smack it against something it will close before it breaks. Don't be worried though, this rear sight wont close on accident while shooting. These will most likely be all I buy now when I use flip up sights. Great job Magpul!