Yankee Hill Machine Co. 1.74" Flip-Up Gas Block Front Sight Steel Black
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Yankee Hill Machine
Overview
The Yankee Hill Machine 1.74" Flip-Up Gas Block Front Sight is a reliable sighting solution designed for AR-15 builders looking for a durable front sight. Constructed from steel, this flip-up sight allows for quick deployment and retraction, providing a clean line of sight when not in use. With a height of 1.74 inches, it integrates seamlessly with standard gas systems and is commonly found in builds configured for the 5.56 NATO caliber.
Specifications
Yankee Hill Machine Co. 1.74" Flip-Up Gas Block Front Sight Steel Black
Build history on GunPartPicker
Builders have been adding the Yankee Hill Machine Co. 1.74" Flip-Up Gas Block Front Sight Steel Black to their builds on GunPartPicker since June 2026. All time, it ranks #19 of the 59 front sights builders have added. Builds with this front sight are nearly all chambered in 5.56 NATO, split between carbine-length (50%) and mid-length (25%) gas systems, and mostly AR-15 (86%, then AR-10 14%).
It was in stock most days in August 2026, and today 2 of the 3 retailers we track have it in stock. The best price drifted down from $144.50 to $137.99 over August 2026 without a real sale. Buying today, the lowest price is $137.99 at Palmetto State Armory, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
Not sure which front sight to pick?
We ranked every front sight by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Front Sight Guide →Frequently Built With
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 3 →Builds in the community that include the Yankee Hill Machine Co., Inc. 1.74" Flip-Up Gas Block Front Sight Steel Black
| Build | Parts | Total |
|---|---|---|
 | 29 | $2613.16 |
 | 32 | $7261.07 |
 | 30 | $3573.86 |
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