Description
The YHM-8027 Flip Sight Set from Yankee Hill Machine gives you a complete front and rear iron sight solution in one box, both riding on the same plane so your sight picture stays true. The all-steel base takes the abuse of range days and hard use, while the aluminum stem keeps the whole package light and low profile. When you're running a red dot or holo and just want backups tucked away, both sights fold down flat and stay clear of your line of sight. Need them fast? A push of the button and they flip up and lock into place with no fuss.
What Sets the YHM Flip Sight Set Apart
These are manual, lock-in-place sights rather than spring-loaded units, which is a big part of why folks trust them. Fewer moving parts means fewer things that can rattle loose or fail when it counts. The steel construction and clean machining are a step up from the plastic BUIS you'll find at the bargain end, and they hold zero the way a good iron sight should.
Mounting the YHM-8027 on Your Rail
Installation is about as simple as it gets. A quick-release thumb screw clamps the set to any Picatinny rail, so you can add or pull the sights without digging for tools. Both the front and rear accept all standard AR sight posts and hardware, and the hardware comes included in the box, so there's no scrounging for parts to finish the job. Folded down, the set takes up very little room on the upper receiver.
This sight set is designed to co-witness with the standard M16/M4 front sight and the rest of YHM's front sight lineup, making it a solid match for an AR-15 build running a red dot. The whole set tips the scale right around 5 ounces, so you get dependable backup irons without weighing down the front end of your rifle.
Key Specifications
- Manufacturer: Yankee Hill Machine
- Model: Flip Sight Set
- Manufacturer Part Number: YHM-8027
- UPC: 841812101895
- Color: Black
- Sight Type: Flip-up front and rear iron sights
- Base Material: Steel
- Stem Material: Aluminum
- Mount Type: Picatinny / Weaver 1913 rail
- Activation: Push-button flip-up, locks when deployed
- Attachment: Quick-release thumb screw
- Adjustments: Windage and elevation
- Post Compatibility: Accepts standard AR sight posts and hardware
- Co-Witness: Standard M16/M4 front sight
- Weight: Approx. 5 oz
What’s Included
- YHM-8027 flip front sight
- Flip rear sight
- Quick-release thumb screws for mounting
- Standard AR sight posts and hardware
Frequently Asked Questions
Does the YHM flip sight set work with a red dot or holographic optic?
Yes. This set is designed to co-witness with the standard M16/M4 front sight, which lines it up nicely as backup irons behind a red dot or holo sight. Both sights fold flat and stay out of your optic's field of view until you flip them up. If your optic ever goes down, you flip these into position and keep running.
How do the sights deploy and stay locked?
A push of the button pops each sight up, and it locks firmly into the deployed position. These are manual lock-in-place sights rather than spring-loaded, so there's less to go wrong over time. When you're done, they fold back down flat against the rail.
What does it take to mount the YHM-8027 to my rail?
The set clamps onto any Picatinny rail using the included quick-release thumb screws, so you can install or remove it without tools. Both the front and rear accept standard AR sight posts and the hardware comes in the box. Setup is quick and there's no need to source extra parts.
Are these sights steel or plastic?
The base is all steel and the stem is aluminum, so you get a rugged setup that shrugs off hard use while staying light. That build puts it a notch above the budget polymer flip sights on the market. It's a dependable choice for folks who want backup irons they can count on.






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