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
Available Merchants(4)
Prices checked
Price Alert
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 #21 of the 65 front sights builders have added. Builds with this front sight are mostly chambered in 5.56 NATO (92%, then .223 Wylde 8%), mostly on carbine-length gas (70%, then mid-length 20%), and nearly all AR-15.
It was in stock most days in September 2026, and today 3 of the 4 retailers we track have it in stock. The best price drifted down from $137.99 to $82.50 over September 2026 without a real sale. Buying today, the lowest price is $137.99 at Palmetto State Armory, above September's low of $82.50, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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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
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →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 | $2702.76 |
 | 32 | $7100.16 |
 | 30 | $3675.13 |
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