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Yankee Hill Machine
Overview
The Yankee Hill Machine Co. AR-15 16.5" Threaded Fluted Barrel is designed for precision and performance in the 5.56 NATO caliber. Its fluted profile not only reduces weight but also enhances cooling, while the 1:8 twist rate ensures excellent stability for a variety of bullet weights. This barrel is optimized for a carbine-length gas system, making it a solid choice for builds focused on reliability and versatility.
Yankee Hill Machine Co. AR-15 16.5" Threaded Fluted Barrel 1-8 Twist
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Builders on GunPartPicker first added the Yankee Hill Machine Co. AR-15 16.5" Threaded Fluted Barrel 1-8 Twist to a build in February 2026. Builds with this barrel are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.
Updated · from real builds on GunPartPicker
We ranked every barrel by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Barrel Length & Brand Report →The part most often added in each category by the 113 builds that include this one
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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 16.5" Threaded Fluted Barrel 1-8 Twist
| Build | Parts | Total |
|---|---|---|
 | 12 | $1539.10 |
 | 13 | $3281.87 |
 | 25 | $1835.95 |
 | 11 | $1599.28 |
| 10 | $1497.13 |
 | 11 | $1351.38 |
| 12 | $1909.23 |
 | 13 | $652.65 |
 | 22 | $2558.04 |
| 24 | $2753.20 |
| 20 | $773.24 |
 | 27 | $2093.15 |
3 global ratings
Top reviews
YHM 16.5 inch threaded fluted barrel in 1:8 twist has run a couple hundred rounds without copper fouling becoming an issue. Quick patch cleans it. Fluting saves weight versus a standard government profile. Threading was concentric.
1-8 twist handled 55gr through 77gr SMK well. fluting saves a few oz off a standard contour. crown is recessed and clean, no eccentricity i could see with a bore light. mid-length gas port was right at the spec listed
bore is consistent and the fluting saves a few oz off a standard contour. 1-8 twist stabilized everything i fed it from 55 to 77 gr. crown was recessed and protected by the thread cap, no eccentricity i could see with a bore light