The GunTec Quick Sight Set is a set of polymer black sights made from Zytel Polymer Composite materials. They are designed specifically for the AR-15 platform and are both lightweight and quick to install. The "PQS" designation refers to their ease of manipulation, which allows for quick and easy adjustments without having to remove the sights from the rifle. The rear aperture of the sight set features dual options for greater flexibility, while the steel internals provide a solid and durable construction. The low profile design ensures that the sight set does not interfere with other components of the rifle, while the push-button lock helps to prevent the sight from folding down during use. The front sight features an adjustable elevation knob, allowing for fine-tuning of the point of impact, while the same-plane design ensures compatibility with any flattop receiver or Picatinny rail. Overall, the GunTec Quick Sight Set is an excellent choice for those looking for a ligh...