Yankee Hill 5040 Q.D.S. Sight Set Black Hardcoat Anodized AR Platform

AR platform shooters need sights that hold zero under recoil and deploy instantly. The Yankee Hill 5040 Q.D.S. Sight Set delivers flip-up functionality with hardcoat anodized durability. Whether you're building a rifle in Pleasanton or maintaining one in the field, reliable backup sights matter. TacticCAL in Sunnyvale stocks quality optics and can handle your FFL transfer in Sunnyvale with straightforward service.

Flip-Up Design for Quick Target Transitions

Folding backup sights clear your sight line when running a primary optic, then flip up instantly when needed. The 5040 Q.D.S. sits low on the rail and stows flat, giving you unobstructed top-end real estate. Black hardcoat anodize resists wear from handling and storage. This setup works across standard AR platforms—carbines, mid-lengths, and rifles. For shooters evaluating sight options alongside other upgrades, browse our California-compliant handgun catalog to round out your setup. Browse our firearms dealer.

Frequently asked questions

Will the Yankee Hill 5040 work with my carbine-length upper?

Yes. The 5040 Q.D.S. mounts to standard Picatinny rail and functions on any AR platform—carbine, mid-length, or rifle. Verify your rail has adequate space at the rear for the folded sight height.

Does this sight set include both front and rear?

Yes. The 5040 Q.D.S. is a complete set with both front and rear flip-up sights. The sight line measures 14.05 inches when deployed, matching standard AR sight radius.

How much does an FFL transfer cost in Sunnyvale?

See our pricing and fees page for current FFL transfer rates — TacticCAL keeps fees flat and transparent. Find gun shop Mountain View at TacticCAL.