The Yankee Hill Machine Carbine Stock Assembly 6 Position (Model YHM-CS-AP4) is a complete, high-quality stock assembly designed for AR-15, M4, and other carbine-length platforms. This ready-to-install kit includes a 6-position mil-spec buffer tube, carbine buffer, carbine recoil spring, and a durable polymer stock. Manufactured by Yankee Hill Machine, a trusted American company known for producing reliable AR-15 components, the YHM-CS-AP4 offers shooters a versatile and comfortable stock solution with multiple length-of-pull adjustments.
Complete 6-Position Adjustable Design
The YHM-CS-AP4 features a true 6-position adjustable carbine stock that allows users to customize the length of pull for optimal comfort and control. Whether you’re wearing body armor, thick clothing, or simply prefer a shorter or longer stock, the six detent positions provide a wide range of adjustment options. The included mil-spec buffer tube ensures compatibility with most standard AR-15 lower receivers, while the carbine buffer and spring deliver smooth, reliable recoil management.
The Yankee Hill Machine YHM-CS-AP4 provides a complete 6-position carbine stock assembly, offering adjustability, durability, and easy installation for AR-15 and M4 style rifles.
Key Features of the Yankee Hill Machine YHM-CS-AP4
- 6-Position Adjustable Stock – Multiple length-of-pull settings for personalized fit
- Complete Assembly – Includes buffer tube, carbine buffer, recoil spring, and stock
- Mil-Spec Buffer Tube – Compatible with standard AR-15 lower receivers
- Durable Polymer Stock – Lightweight yet strong construction
- Smooth Recoil Management – Properly matched buffer and spring for reliable function
- Model YHM-CS-AP4 – Official Yankee Hill Machine part number
- UPC 816701015430 – Authentic YHM product
Why Choose the Yankee Hill Machine Carbine Stock Assembly?
The Yankee Hill Machine YHM-CS-AP4 is an excellent choice for builders and shooters who want a reliable, adjustable stock without purchasing individual components. This complete assembly saves time and ensures all parts are properly matched for optimal performance. The 6-position design offers greater flexibility than fixed stocks, making it ideal for multiple users or varying shooting conditions. Yankee Hill Machine is known for producing high-quality, American-made AR-15 parts that offer excellent value and durability. Whether you’re building a new rifle, upgrading an existing carbine, or replacing a worn stock assembly, the YHM-CS-AP4 delivers dependable function and comfortable ergonomics at a competitive price.
Technical Specifications
| Brand | Yankee Hill Machine (YHM) |
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| Model | YHM-CS-AP4 |
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| Product Type | Carbine Stock Assembly |
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| Positions | 6-Position Adjustable |
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| Includes | Buffer Tube, Carbine Buffer, Recoil Spring, Stock |
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| Compatibility | AR-15, M4 Carbine Platforms |
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| Material | Polymer Stock / Aluminum Buffer Tube |
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| Intended Use | AR-15 Builds, Tactical, Home Defense, Competition |
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| UPC | 816701015430 |
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Ideal Applications
The Yankee Hill Machine YHM-CS-AP4 is well-suited for a wide range of AR-15 builds and user preferences. It is an excellent choice for tactical carbines, home defense rifles, and general-purpose AR-15s where adjustability is desired. The 6-position stock allows shooters to fine-tune the length of pull for better shouldering and improved accuracy. This assembly is also popular among builders who want a complete, ready-to-install solution rather than sourcing individual parts. The lightweight polymer stock helps keep overall rifle weight down while maintaining durability. Whether you’re building a new rifle from the ground up or upgrading an existing carbine, the YHM-CS-AP4 provides a reliable and comfortable stock solution that enhances both function and ergonomics. Its compatibility with standard mil-spec buffer tubes makes it a versatile option for most AR-15 platforms.
Upgrade your AR-15 with the Yankee Hill Machine Carbine Stock Assembly 6 Position. This complete adjustable stock kit (Model YHM-CS-AP4) includes everything needed for a reliable, comfortable carbine stock setup. UPC 816701015430.
