Description
The Yankee Hill Machine (YHM) Flip Rear Sight is a compact, folding rear peep designed for AR-style platforms and Picatinny rails. It pairs a rugged steel base with an aluminum stem and a quick-release thumb screw for fast installation and positive deployment. The sight offers windage adjustment with a stated 1/2 M.O.A. specification and is configured to co-witness with standard M16/M4 front sights. When folded, the sight measures 0.840 inches from its highest point down to the top of the upper receiver, keeping a low profile on the upper.
Key Specifications
- The sight fits a Picatinny rail for secure mounting.
- The exterior finish is Black.
- The base is made of steel while the stem is aluminum.
- The folded height measures 0.840 inches above the upper receiver as specified.
- Windage adjustment is listed as 1/2 M.O.A..
- Includes a standard rear peep aperture.
- Features a quick-release thumb screw for tool-free removal.
- The design locks in the deployed position for positive engagement.
- The overall length is listed as 5.5.
- Mounting compatibility is described as mounts to a Picatinny rail.
Purpose-built as a compact backup or primary iron sight for practical use, the YHM Flip Rear Sight balances durability and low profile performance. Its folding design and quick-release attachment make it suitable for operators and enthusiasts who require a dependable rear peep that co-witnesses with standard AR front sights and stows neatly when not in use.






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