Yankee Hill Machine YHM Gas Block Riser Assy

Yankee Hill Machine's YHM Gas Block Riser Assy (YHM-230) adapts YHM railed gas blocks to allow a same‑plane front sight. It is intended for use with YHM's Q.D.S. same plane sight system and related sighting setups. The component is described as made from aircraft‑quality aluminum and finished in a hardcoat matte‑black anodize.

Key Specifications

• The manufacturer is listed as Yankee Hill Machine.
• The model is identified as the Gas Block Riser (YHM-230).
• The finish is specified as Hardcoat Anodized matte black to Military Specifications or better.
• The material is described as aircraft quality aluminum.
• The fit is specified as Picatinny.
• It provides same-plane front sight alignment for YHM railed gas blocks.
• Compatible with the Q.D.S. same plane sight system from YHM.
• Length is listed as 2.0 (unit not specified in source materials).
• Weight values conflict in source data: 1.344 Oz. and 0.1 (attribute entry).
• The color is listed as Black.

This compact riser is a straightforward accessory for shooters assembling or refining an iron‑sight or sight‑system setup on YHM‑pattern rails. Its aircraft‑grade aluminum construction and hardcoat anodized finish are presented for durability in mounting and sight alignment duties. For users seeking consistent front‑sight plane geometry with YHM's Q.D.S. system, this riser provides a dedicated, low‑profile solution.