Excellent design and manufacturing - Troy Top Mounted Deployable Rear Sight

These rear iron sights are an excellent choice. The design might be tight if a rail is out of spec, but the rail attachment type is the sturdiest style they could have chosen, and it spreads compression evenly to both sides of the sight, increasing precision by keeping it perfectly centered. The back-sweeping design places the sight further back, providing a slightly longer sight radius than a fore-swept design like Samson's. The aluminum body's thick, matte, hard anodization matches the finish on the aperture, and neither are shiny/reflective, making for a good sight picture regardless of bright light from any angle.

The sight is also on the lighter weight end of fixed iron sights.

If you are considering an aftermarket aperture (say, tritium), beware that the sight body is not compatible with and does not use a standard mil-spec a2 aperture piece. Their openings are the same size and function in the same way, but the piece is designed totally differently.