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Yankee Hill Machine
Overview
The Yankee Hill Machine Co. AR-15 Gas Block Assembly is a low profile gas block designed to fit .750 diameter barrels, providing a reliable connection without adding unnecessary bulk. Made from steel and finished with a phosphate coating, this clamp-on gas block ensures durability and stability under various operating conditions. It is commonly found in mid-length gas system builds chambered in 5.56 NATO, making it a practical choice for builders looking to optimize their rifle's performance.
Yankee Hill Machine Co. AR-15 Gas Block Assembly Low Profile .750 Steel Black
Yankee Hill Machine Co. AR-15 Gas Block Assembly Low Profile .750 Steel Black ranked #12 of the 67 gas blocks builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #12 of the 181 gas blocks builders have added. Builds with this gas block are mostly chambered in 5.56 NATO (60%, then .223 Wylde 27%), split between mid-length (56%) and carbine-length (22%) gas systems, and mostly AR-15 (82%, then AR-10 18%).
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 5 of the 6 retailers we track have it in stock. It dipped to $16.63 at KY Gun Company for a stretch in September 2026, under its usual $18.30, so sales do come around. Buying today, the lowest price is $16.63 at KY Gun Company, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
We ranked every gas block by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Gas Block Guide →Check it against the live catalog:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Yankee Hill Machine Co., Inc. Ar-15 Gas Block Assembly Low Profile .750 Steel Black
| Build | Parts | Total |
|---|---|---|
 | 13 | $1799.79 |
 | 11 | $455.25 |
 | 14 | $2062.50 |
 | 20 | $976.00 |
 | 10 | $745.00 |
 | 24 | $934.23 |
 | 24 | $1846.46 |
 | 22 | $2548.21 |
| 24 | $5252.53 |
 | 12 | $914.45 |
 | 21 | $1891.40 |
 | 13 | $813.55 |
3 global ratings
Top reviews
YHM .750 low profile gas block has slightly different black finish than my other YHM parts in direct light. Mechanically perfect, set screws engage cleanly into the dimple. Function is exactly what you need from a gas block.
YHM .750 low profile gas block is well made steel but install required care to clock it properly with the gas tube before tightening. Took some adjustment. Once locked in it doesnt move. Set screws engage cleanly into the dimple.
YHM .750 low profile gas block is well made steel but install required care to clock it properly with the gas tube before tightening. Took some adjustment. Once locked in it stays put. Set screws engage cleanly into the dimple.
