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Aeroshaft7.69YHM block holds
Reviewed on April 24, 2026Verified with Build
ran this on a 16 mid length under a YHM diamondback handguard. set screws stayed put after 400 rds. phosphate finish is even with no thin spots. solid value
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Yankee Hill Machine Co Suppressor Gas Block, .750 Diameter, Phosphate Finish, Black
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Yankee Hill Machine
Overview
The Yankee Hill Machine Co Suppressor Gas Block is designed for a .750-inch diameter gas system, making it a versatile choice for optimizing gas flow in your AR-15 build. Its black phosphate finish provides a level of protection against wear and corrosion, ensuring durability in various conditions. This gas block is commonly found in mid-length gas system builds chambered in 5.56 NATO, offering improved reliability and performance.
Specifications
MPNYHM9389SS
FinishBlack
Gas Block Diameter.750
Yankee Hill Machine Co Suppressor Gas Block, .750 Diameter, Phosphate Finish, Black
Frequently Built With
Based on build data
Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length
Gas Tube
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Aero Precision Stainless Steel Gas Tube - Mid-Length
Gas Tube
Maximize Your AR-15's Potential with Tacfire's 15" ACE M-LOK Handguard - Black Excellence - HG20-15
Handguard
Radian Forward Assist - 7075 Aluminum - Black
Forward Assist
Diamondback Firearms 5.56 Ar-15 Bolt Carrier Group - Nitride
Bolt Carrier GroupBuild 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.
92.1%
AR-1592.1%
AR-106.3%
AR-91.6%
CaliberBased on real build data showing which calibers builders choose alongside this product.
70%
5.56 NATO70%
.223 Wylde11.4%
.308 Win4.3%
.458 SOCOM1.4%
300 Blackout1.4%
Other11.2%
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
52.6%
Mid-Length52.6%
Carbine28.1%
Rifle14%
Pistol5.3%
| Product | Category | Times Built Together |
|---|---|---|
| Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length | Gas Tube | 20 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 13 |
| Aero Precision Stainless Steel Gas Tube - Mid-Length | Gas Tube | 13 |
| Maximize Your AR-15's Potential with Tacfire's 15" ACE M-LOK Handguard - Black Excellence - HG20-15 | Handguard | 12 |
| Radian Forward Assist - 7075 Aluminum - Black | Forward Assist | 12 |
| Diamondback Firearms 5.56 Ar-15 Bolt Carrier Group - Nitride | Bolt Carrier Group | 11 |
| Platform | Percentage |
|---|---|
| AR-15 | 92.1% |
| AR-10 | 6.3% |
| AR-9 | 1.6% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 70% |
| .223 Wylde | 11.4% |
| .308 Win | 4.3% |
| .458 SOCOM | 1.4% |
| 300 Blackout | 1.4% |
| 6.5 Grendel | 1.4% |
| 6.8 SPC II | 1.4% |
| 6mm ARC | 1.4% |
| 7.62x39mm | 1.4% |
| 7.62x51 NATO | 1.4% |
| .223 Remington | 1.4% |
| .45 ACP | 1.4% |
| .450 Bushmaster | 1.4% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 52.6% |
| Carbine | 28.1% |
| Rifle | 14% |
| Pistol | 5.3% |
Builds Featuring This Part
See all 32 →Builds in the community that include the Yankee Hill Machine Co Suppressor Gas Block, .750 Diameter, Phosphate Finish, Black
| Build | Parts | Total |
|---|---|---|
 | 18 | $1548.12 |
 | 11 | $1359.37 |
 | 22 | $1601.47 |
 | 8 | $597.34 |
 | 22 | $1723.66 |
| 28 | $3357.27 |
 | 29 | $3879.42 |
 | 25 | $1234.79 |
 | 14 | $1134.97 |
 | 24 | $1462.19 |
 | 10 | $431.05 |
 | 12 | $1350.46 |
Customer reviews
4.7out of 5
3 global ratings
Top reviews
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NathanG2021YHM suppressor gas block shade
Reviewed on April 14, 2026Verified with Build
Yankee Hill Machine suppressor gas block in .750 phosphate has a slightly more matte finish than my other phosphate parts when compared in good light. Mechanically perfect, designed for suppressor use. Set screws engage cleanly into a dimpled barrel.
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B
bl4ck0niYHM suppressor block
Reviewed on April 2, 2026Verified with Build
set screw clamp design holds tight on a .750 journal. phosphate finish matches a phosphate FSB area. low profile sits under any handguard. ports are properly drilled for a suppressed gas signature
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