These are the aluminum ones, not polymer. The sights lock in place when deployed so there's no worry that they may accidentally get folded out of position while being used.
Standard small and large rear aperture and the front sight is adjustable with a standard A2 sight tool. These sights are pretty slick all around and I'd love to be able to use them but aging eyes dictate otherwise.
There have been reports of some counterfeit sights making the rounds due to their popularity at one time. You can see the difference in the fake and the real sights in the link below.
https://www.texasguntalk.com/threads/kn ... ead.99057/
They retail for about 225.00 and I'm asking 100.00
I'd prefer FTF but will ship for 10.00
