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.750 Gas Block – Precision Fit for AR-15 Rifles

If your AR-15 build runs a standard barrel diameter, chances are you're looking for a .750 gas block — and you've come to the right place. This size is one of the most common among AR-style rifles and offers the perfect balance between strength, gas flow, and compatibility.

At Mounts Plus, we carry a full range of high-quality AR-15 .750 gas blocks, designed to optimize your rifle’s cycling, reduce gas blowback, and stay locked in place round after round.

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🔧 Why Choose a .750 Gas Block for Your AR-15?

A .750” gas journal is found on most standard-profile AR barrels. Our gas blocks are engineered to match that spec precisely, ensuring reliable performance across suppressed and unsuppressed setups.

Key benefits include:

• Fits most factory and aftermarket AR-15 barrels
• Enables smoother cycling and less recoil shock
• Compatible with free-float handguards
• Available in clamp-on, set screw, and adjustable versions
• Finished in black nitride or phosphate for durability

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⚙️ Low-Profile, Adjustable & Clamp-On Options

We stock a wide variety of .750 gas blocks to meet your needs — whether you’re doing a new build or upgrading a stock rifle.

Low-Profile Gas Blocks

• Fits under slim free-float handguards
• Keeps your build lightweight and clean
• Ideal for use with red dots or optics setups

Clamp-On Gas Blocks

• Quick to install — no barrel dimpling required
• Excellent for lightweight builds
• Distributes pressure evenly for tight lock-up

Adjustable Gas Blocks

• Fine-tune your gas flow
• Perfect for suppressed rifles
• Helps manage recoil and reduce fouling

All our blocks are made from high-strength steel or stainless steel, with machined precision that ensures a rock-solid fit. Most models include set screws or clamps and are easy to install with standard tools.

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🔩 Top Brands You Can Trust

We carry .750 AR-15 gas blocks from some of the most trusted names in the industry:

• SADLAK

• PRI

• Superlative Arms

• EGW

• Samson

Whether you're competing, training, or just enjoying time at the range, our gas blocks are built to perform under pressure.

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🛒 Upgrade to a .750 Gas Block Today

Improve your AR-15’s gas control, reliability, and long-term durability with a high-quality .750 gas block. With multiple styles and finishes to choose from, there’s a perfect fit for every rifle setup.

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💬 FAQ

Q: What is a .750 gas block used for?
A: It fits AR-15 barrels with a .750” diameter gas journal — the most common size for standard-profile barrels.

Q: How do I know if I need a .750 gas block?
A: Check your barrel specs. If the gas journal measures .750 inches in diameter, this is the correct size.

Q: Is an adjustable .750 gas block worth it?
A: Yes, especially for suppressed rifles or if you want to reduce felt recoil. Adjustable blocks let you fine-tune gas flow for reliability and comfort.

Q: Can I install a .750 gas block myself?
A: Most can be installed at home with basic tools. Clamp-on models are great for easy installs, while set screw types work best with dimpled barrels.

Q: Will this fit under my handguard?
A: Low-profile models are specifically designed to fit under slim free-float handguards with no clearance issues.

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