Yankee Hill Bipod Adaptor – Black Aluminum Picatinny Mount for Harris-Style Bipods – Model 638 (UPC: 816701014389)
Get more stability out of your rifle by adding a rock-solid bipod mounting point with the Yankee Hill Bipod Adaptor, Black Aluminum, Picatinny Attachment for Harris Style Bipods – 638 / YHM-638, UPC 816701014389. This compact, rugged adapter lets you attach popular Harris-style bipods directly to any Picatinny rail, turning your tactical or precision rifle into a steady, accurate shooting platform. Yankee Hill Machine Co.+1
Instantly Add a Sling Stud/Bipod Mount to Any Picatinny Rail
This Yankee Hill Machine bipod adapter is designed to add a Harris-style sling stud interface to any Picatinny rail, so you can mount your existing Harris bipod (or similar) on AR-15s, precision bolt guns, and other modern rifles that lack a traditional sling stud at the forend. Cheaper Than Dirt+1
Works with Harris-style bipods
Clamps directly to standard Picatinny/1913 rails
Ideal for AR-15s, chassis rifles, and other rail-equipped platforms
If you’ve got a favorite Harris bipod and a rifle that only has rails up front, this adapter is the missing link between the two.
Aircraft Grade Aluminum – Strong, Light, and Built to Last
The Yankee Hill 638 bipod adaptor is machined from aircraft grade aluminum, giving you excellent strength without unnecessary weight hanging off the front of your rifle. Yankee Hill Machine Co.+1
Material & Construction Highlights:
Aircraft-grade aluminum body for durability and rigidity
Designed to handle regular field use and recoil
Corrosion-resistant construction for long-term reliability
This is a small part that takes a big load—especially when you’re loading into your bipod for precision shots—so choosing a quality adapter like this matters.
Hardcoat Anodized Matte Black Finish to Mil-Spec
To enhance durability and reduce glare, the YHM-638 bipod adapter is hardcoat anodized matte black to military specifications or better. Yankee Hill Machine Co.+1
Benefits of the finish include:
Non-reflective matte black appearance for tactical use
Excellent resistance to wear, scratches, and corrosion
Matches common black anodized rails and accessories for a clean, uniform look
Whether you’re running a duty rifle, hunting rig, or competition gun, this adapter blends right in while standing up to rough handling.
Compact and Lightweight – Minimal Bulk, Maximum Function
Despite its rugged build, the Yankee Hill Bipod Adaptor 638 remains compact and easy to run on the front of your rifle.
Key dimensions: Yankee Hill Machine Co.+1
Length: 2.6"
Weight: 2.144 oz
The low-profile design keeps your rail from feeling cluttered, preserves your rifle’s balance, and adds very little weight—ideal for shooters who carry their rifle over long distances or run dynamic positional stages.
Easy Installation with a Simple Allen Wrench
You don’t need a bench full of tools to get this adapter mounted. The Yankee Hill 638 Picatinny bipod adaptor is designed for quick, straightforward installation.
Attaches using a common 7/64" Allen wrench Yankee Hill Machine Co.+1
Clamps securely to your Picatinny rail
Once tightened, it provides a solid mounting point that stays put under recoil
Mount it in the position that best suits your shooting style, lock it down, and you’re ready to attach your Harris-style bipod.
Perfect for Harris-Style Bipods and Precision Shooting
This adapter is specifically engineered to interface with Harris-style bipods, which rely on a traditional sling stud for attachment. Cheaper Than Dirt+1
Ideal for:
AR-15 and AR-10 rifles with Picatinny handguards
Precision and long-range rifles with full-length rail systems
Hunting rifles upgraded with modern rail-equipped forends
Any shooter wanting a solid, repeatable bipod mount on their rail-equipped firearm
Paired with a quality bipod, this adapter helps you achieve rock-solid prone or bench positions, improving your stability, accuracy, and consistency on target.
Real-World Performance and Reliability
Independent testing and user feedback highlight the YHM-638 bipod adapter as a reliable, stable, and budget-friendly solution for mounting Harris bipods on Picatinny rails. Users praise its: The Civil War+1
Rock-solid clamping force that doesn’t loosen under recoil
Lightweight design that doesn’t upset rifle balance
Durable anodized finish that resists wear and weather
Simple, tool-based mount that favors reliability over complex quick-detach mechanisms
For many shooters, this adapter becomes a set-it-and-forget-it part of their rifle setup.
Key Specifications – Yankee Hill Bipod Adaptor 638 / YHM-638
Brand: Yankee Hill Machine (YHM)
Product Name: Yankee Hill Bipod Adaptor – Picatinny Attachment for Harris Style Bipods
Manufacturer Part Number: 638 / YHM-638 Black Market Arms+1
UPC: 816701014389 OpticsPlanet+1
Material: Aircraft grade aluminum
Finish: Hardcoat anodized matte black, to military specifications or better Yankee Hill Machine Co.+1
Color: Black Impact Guns+1
Length: 2.6"
Weight: 2.144 oz
Attachment: Clamps to Picatinny rail, installs with 7/64" Allen wrench
Compatibility: Harris-style bipods / sling-stud style bipods; any firearm with Picatinny rail
Why Choose the Yankee Hill 638 Bipod Adaptor?
If you need a Picatinny bipod adapter for Harris-style bipods, the Yankee Hill Bipod Adaptor 638 delivers an ideal balance of quality, strength, and value:
Rugged aircraft-grade aluminum construction that’s built to work hard
Mil-spec hardcoat anodized matte black finish for durability and low glare
Secure Picatinny attachment that keeps your bipod locked in place
Compact and lightweight design that won’t weigh down your rifle
Trusted Yankee Hill Machine (YHM) quality with proven performance in the field
For shooters who demand a reliable Picatinny attachment for Harris-style bipods, the Yankee Hill Bipod Adaptor Black Aluminum, Picatinny Attachment for Harris Style Bipods – 638 / YHM-638 (UPC 816701014389) is a smart, durable upgrade for any serious rifle setup.
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