Yankee Hill 5040H Q.D.S. Sight Set Black Hardcoat Anodized Folding with Hooded Stem for AR-Platform

Backup iron sights remain essential on any serious AR platform build. The Yankee Hill 5040H Q.D.S. Sight Set delivers flip-up functionality with a hooded front stem for reliable target acquisition. Whether you're in San Jose or the broader South Bay, TacticCAL Gun Store supports your build with quality optics and FFL transfer in Sunnyvale for all your components.

Hooded Front Stem Design

The hooded stem protects your front sight post from impact and provides a defined sight picture in variable lighting. Folding design keeps the sight low when not in use, clearing the way for optics or alternative sighting systems. Black hardcoat anodized finish resists corrosion and wear. At 8.6 inches, this set balances durability with practical handling. For detailed guidance on sight selection and AR platform compatibility, review our California gun-buyer FAQ. Visit our firearms dealer in Sunnyvale for our full catalog.

Frequently asked questions

Do these flip-up sights co-witness with standard AR optic mounts?

Yes. The Yankee Hill 5040H sits at standard height for co-witnessing under most AR-platform optics, allowing you to use them as a backup or transition sighting system without removing your primary sight.

Can I install the Q.D.S. sight set myself on my AR?

Installation requires basic tools and familiarity with your AR platform. The quick-detach system allows tool-free removal once installed. If you're unsure, a gunsmith or experienced builder can handle it quickly.

Where is the closest FFL dealer to Santa Clara, Mountain View, or Palo Alto?

TacticCAL Gun Store in Sunnyvale is a short drive from Santa Clara, Mountain View, and Palo Alto, serving the South Bay as a full-service FFL dealer for transfers and DROS. Find gun store Concord at TacticCAL.