Kriss USA Defiance Flip Up Rear Sight AR-15 Black Low Profile Polymer

The Kriss USA Defiance flip up rear sight delivers a compact, reliable backup aiming solution for modern AR-15 platforms. Engineered with a low-profile polymer construction, this sight maintains a streamlined footprint when stowed, staying clear of primary optics and co-witnessed setups. The flip-up design deploys instantly when needed, providing a durable secondary aiming reference.

Built around practical field requirements, the Defiance rear sight integrates seamlessly into duty, tactical, and recreational rifle configurations. Its polymer construction keeps weight minimal while maintaining the rigidity demanded by AR-platform shooters. Designed to co-witness with standard AR-15 carry handle height or typical riser-mounted optics, this sight fits naturally into existing sight ecosystems.

Reliability and simplicity drive every aspect of the Defiance platform. No tools required for deployment or adjustment. The flip mechanism operates smoothly and locks securely in both positions. Made for shooters who value uncluttered rails and fast-deploy backup options.

Key Features and Benefits

Low-Profile Design
Maintains a slim footprint when folded, preserving rail space and preventing snag points. Ideal for users running variable magnification scopes or red dots where clearance matters.

Flip-Up Deployment
Raises to full height in a single motion. No fumbling or multiple adjustments required when transitioning from primary optics to iron sights.

Polymer Construction
Lightweight without sacrificing structural integrity. Resists corrosion and reduces overall rifle weight.

AR-15 Optimized
Dimensions and mounting interface engineered specifically for standard Picatinny rails on AR platforms. Direct fit, no adapters.

Secondary Aiming Reference
Works as co-witness backup to magnified or illuminated optics, or serves as standalone sight for distance work.

Specifications

Manufacturer: Kriss USA
Model: Defiance
Sight Type: Flip-up rear sight
Platform: AR-15
Construction Material: Polymer
Finish: Black
Height Profile: Low
Rail Mount: Picatinny
Deployment Method: Flip-up

The Kriss USA Defiance rear sight fills a practical role in AR-15 optics setups where space is limited and reliability cannot be compromised. Its straightforward design and polymer durability make it a sensible choice for users building backup sight systems.