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Yankee Hill Gas Block – Reliable Performance for .750" AR-15 Barrels

When you need a solid, low-profile gas block for your AR-15, Yankee Hill Machine delivers performance you can count on. Built from heat-treated steel and designed to fit standard .750" barrels, these AR-15 gas blocks offer the perfect balance of strength, precision, and compatibility.

Whether you're running a suppressor, installing a free-float handguard, or simply upgrading a stock part, YHM gas blocks give you the durability and fitment serious shooters demand.

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🔧 Choose the Right YHM Gas Block for Your AR-15

At Mounts Plus, we carry a full lineup of YHM gas blocks built for different setups and preferences:

• Clamp-On Gas Blocks – Great for builds where maximum barrel contact is preferred. Easy to install without dimpling your barrel.
• Set Screw Gas Blocks – Lightweight and secure, ideal for streamlined builds or performance rifles.
• Low-Profile Design – Fits under most free-float handguards, allowing maximum rail space for accessories.

Each YHM gas block is precisely machined to ensure consistent gas flow and reliable cycling, whether you’re shooting suppressed or unsuppressed.

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💡 Suppressor Compatibility and Build Flexibility

If you’re running a suppressor like the YHM Turbo K or Resonator, these gas blocks help manage back pressure and excess gas for smoother function. Their tight tolerances and quality craftsmanship make them a smart choice for tuning your rifle’s gas system.

Most YHM gas blocks are compatible with:

• .750" diameter barrels (the most common AR-15 standard)
• Carbine, mid-length, and rifle-length gas systems
• AR pistols, SBRs, and full-length rifles

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🔩 Installation Tip

While clamp-on versions are easier for beginner builds, we recommend using Rocksett or threadlocker with set screw models to prevent shifting under heat and recoil. For best results, pair with an upper receiver block during installation.

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🛠️ Why Choose YHM for Your Gas System?

• 100% made in the USA
• Military-grade materials and specs
• Compatible with most major AR-15 handguards and suppressor setups
• Perfect for home builders, tactical users, and range shooters

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🔗 Related AR-15 Parts for Your YHM Gas Block Build

Complete your upper with compatible parts and accessories:

• 🔩 Upper Receiver Blocks – Make your gas block installation safe and stress-free with the right vise block tools.

• 🔥 AR-15 Muzzle Brakes – Pair your YHM gas block with a suppressor-ready or recoil-reducing muzzle device.

• 🛠 AR-15 Handguards – Free-float rails that fit perfectly over low-profile gas blocks for a sleek build.

• 🧰 AR-15 Tools – Everything you need to finish your build, including punches, wrenches, and torque drivers.

• 🧱 Yankee Hill Machine Parts – Explore more from YHM including muzzle devices, sights, and handguards.

Whether you're assembling a precision rifle or upgrading your gas system, these links will help you build smarter and faster.

 

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❓ FAQ – YHM Gas Block

What size barrel does the YHM gas block fit?

YHM gas blocks are designed for .750" diameter barrels, which are standard on most AR-15 platforms.

What’s the difference between clamp-on and set screw models?

Clamp-on models provide full barrel contact and are easier to install without dimpling. Set screw versions are lighter and offer a lower profile—ideal for custom builds.

Are these gas blocks suppressor compatible?

Yes. YHM gas blocks offer consistent gas flow and are a popular choice for suppressed rifles using YHM muzzle devices and cans.

Will it fit under a free-float handguard?

Yes. All YHM gas blocks offered here have a low-profile design that fits under most free-float AR-15 handguards.

Are these made in the USA?

Absolutely. All Yankee Hill Machine products are proudly manufactured in Massachusetts using high-grade American steel.