- Front sight available with either standard or hooded (HK style) stem
- Front sight is standard handguard height
- Rear sight has a dual peep (A2 style) aperture
- Front sight folded height: .435"
- Rear sight folded height: .435"
The Yankee Hill Machine QDS Flip Up Sight System features a spring loaded deployment system that automatically flips the sight up at the push of a button. Front and rear sights lock positively in the folded and deployed positions and are precision machined from high strength aircraft aluminum and hardcoated to military specifications.