Yankee Hill Machine YHM-9390A 2 Piece Railed Gas Block Assembly – Picatinny Rail Gas Block for AR-15
The Yankee Hill Machine YHM-9390A 2 Piece Railed Gas Block Assembly is a versatile and durable upgrade for AR-15 and M4-style rifles. This two-piece design allows for easy installation on barrels with pinned gas blocks or when you want to avoid removing the muzzle device or handguard. Featuring an integrated Picatinny rail on top, the YHM-9390A provides a secure mounting platform for front sights, weapon lights, lasers, or other accessories. Manufactured from high-strength steel and finished with a tough black oxide coating, this gas block is built to withstand the rigors of hard use while maintaining a low-profile appearance. Yankee Hill Machine is known for producing high-quality American-made AR-15 components, and the YHM-9390A continues that tradition with excellent fit, finish, and functionality.
Whether you are building a custom AR-15, upgrading an existing rifle, or adding accessory mounting options to your carbine, the Yankee Hill Machine YHM-9390A 2 Piece Railed Gas Block offers a practical and reliable solution.
Key Features of the Yankee Hill Machine YHM-9390A 2 Piece Railed Gas Block
Two-Piece Design
Easy installation without removing the muzzle device or pinned gas block on many barrels.
Integrated Picatinny Rail
Full-length top rail provides a secure mounting platform for sights, lights, and other accessories.
High-Strength Steel Construction
Machined from durable steel for long-term strength and reliability under heavy use.
Low Profile Design
Maintains a sleek, minimal profile while still offering functional rail space.
Black Oxide Finish
Corrosion-resistant black oxide coating for enhanced durability and a professional appearance.
AR-15 / M4 Compatible
Designed to fit standard AR-15 and M4 carbine barrels for broad compatibility.
Why Choose the Yankee Hill Machine YHM-9390A 2 Piece Railed Gas Block?
The Yankee Hill Machine YHM-9390A 2 Piece Railed Gas Block Assembly is an excellent choice for AR-15 builders and enthusiasts who want the convenience of a two-piece gas block combined with the utility of a top Picatinny rail. Traditional one-piece gas blocks can be difficult to install on certain barrels, especially those with pinned front sight bases or permanent muzzle devices. The two-piece design of the YHM-9390A solves this problem by clamping securely around the barrel, making installation much easier and more accessible for most users.
Yankee Hill Machine has built a strong reputation for producing reliable, well-machined AR-15 components at competitive prices. The YHM-9390A delivers on that reputation with solid construction, precise machining, and practical features. The integrated rail allows shooters to mount a front sight for backup iron sights or attach accessories such as weapon lights without needing additional rail sections. Its low-profile design works well with most free-float handguards while still providing useful mounting real estate. Whether you are building a home defense rifle, a competition carbine, or a general-purpose AR-15, the Yankee Hill Machine YHM-9390A offers a smart, functional upgrade that enhances both performance and versatility.
Technical Specifications
| Specification | Details |
|---|
| Brand | Yankee Hill Machine (YHM) |
| Product | 2 Piece Railed Gas Block Assembly |
| Model Number | YHM-9390A |
| UPC | 816701013511 |
| Material | Steel |
| Finish | Black Oxide |
| Design | Two-Piece Clamp-On |
| Rail Type | Picatinny (Top Rail) |
| Compatibility | AR-15 / M4 Carbine Barrels |
| Profile | Low Profile |
| Best For | AR-15 Builds, Accessory Mounting, Backup Iron Sights |
Shop the Yankee Hill Machine YHM-9390A Gas Block Today!
The Yankee Hill Machine YHM-9390A 2 Piece Railed Gas Block Assembly (UPC 816701013511) is a durable, two-piece clamp-on gas block featuring an integrated Picatinny rail for accessory mounting. Designed for AR-15 and M4 platforms, this steel gas block offers easy installation, a low-profile design, and reliable performance. The Yankee Hill Machine YHM-9390A is an excellent choice for builders seeking a functional and versatile gas block solution with top rail mounting capability.
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