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Yankee Hill Machine
Overview
The Yankee Hill Machine Co., Inc. Diamond Series Handguard is a black aluminum handguard designed for mid-length gas systems on AR-15 platforms. At 9 inches in length, it provides a sturdy mounting interface with Picatinny rails, allowing for easy attachment of accessories and optics. This handguard is commonly found in builds using a mid-length gas system and chambered in 5.56 NATO, making it a versatile choice for various applications.
Yankee Hill Machine Co. Diamond Series Handguard, Mid-Length ranked #86 of the 243 handguards builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #187 of the 635 handguards builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today all 6 retailers we track have it in stock. It dipped to $119.40 at Brownells for a stretch in August 2026, well under its usual $133.67, so sales do come around. Buying today, the lowest price is $133.67 at GritR Sports, above August's low of $119.40, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every handguard by how often it shows up in real builds on GunPartPicker.
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