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Adjustable Gas Blocks – Low Profile, Clamp-On & Bleed-Off for AR-15

Precision Gas Control for Suppressed, Competition, and Custom AR Builds

If you're tuning a suppressed AR-15, dialing in your rifle for competition, or trying to reduce recoil and fouling, an adjustable gas block is one of the smartest upgrades you can make. Mounts Plus offers a wide selection of adjustable gas blocks that give you complete control over your rifle’s gas system — improving performance, reliability, and longevity.

Our gas blocks come in low-profile, clamp-on, set screw, and bleed-off styles and are compatible with popular barrel sizes like .625, .750, .875, and .936.

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🔧 What Does an Adjustable Gas Block Do?

An adjustable gas block lets you regulate the amount of gas that travels back into your AR-15’s action after a shot is fired. This allows you to:

• ✅ Reduce felt recoil

• ✅ Minimize carbon fouling and bolt wear

• ✅ Improve suppressed shooting comfort

• ✅ Customize performance for different loads and environments

Whether you're shooting subsonic ammo or tuning for precision, adjustable gas blocks make your rifle run smoother and cleaner.

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🧰 Types of Adjustable Gas Blocks We Offer

✅ Low Profile Adjustable Gas Blocks

• Perfect fit under free-float handguards

• Ideal for modern, slim AR-15 builds

• Lightweight and unobtrusive

✅ Clamp-On Adjustable Gas Blocks

• Easy to install and remove

• Great for match barrels or precision builds

• Non-marring and secure when properly torqued

✅ Set Screw Gas Blocks

• Classic installation style

• Rock-solid lockup with dimpled barrels

• Cost-effective and widely used

✅ Bleed-Off Adjustable Gas Blocks

• Vents excess gas forward, away from the shooter

• Ideal for suppressed or SBR builds

• Keeps receivers cleaner and cooler

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📏 Fitment for All Barrel Sizes

We carry adjustable gas blocks for all common AR-15 barrel diameters:

• .625 – Lightweight profile barrels

• .750 – Mid-weight/go-to AR barrel standard

• .875 – Heavy contour barrels

• .936 – Bull barrels and precision builds

Always measure your barrel’s gas block journal to ensure correct fit.

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🔥 Best Adjustable Gas Block Brands We Carry

• Superlative Arms – Industry-leading bleed-off gas blocks

• SADLAK – Steel clamp-on blocks for rugged builds

• YHM (Yankee Hill Machine) – Budget-friendly and dependable

• Sons of Liberty Gun Works – Hard-use rated adjustable options

• DoubleStar, JP Enterprises, ODIN Works, and more...

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🎯 Who Needs an Adjustable Gas Block?

Adjustable gas blocks are ideal for:

• Suppressed AR-15 owners who want to reduce gas blowback

• Competitive shooters looking for a softer recoil impulse

• Reloaders and long-range shooters fine-tuning loads

• Anyone running mixed ammo types or variable barrel lengths

📌 Want smoother cycling, cleaner internals, and less wear? Upgrade your gas system today.

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⭐ Customer Feedback

“Installed the Superlative Arms block on my suppressed SBR — instant difference. Way less blowback, and cycling is buttery smooth.” – T.H.

“SADLAK clamp-on block is rock solid. Precision fit on my .936 barrel and zero gas leaks.” – Lancer556

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🛠️ Why Buy from Mounts Plus?

• 🔧 Expert-vetted gas blocks from trusted manufacturers

• 🚚 Fast shipping from U.S. inventory

• 💬 Friendly support from AR builders who understand gas tuning

• 🔐 Secure checkout and satisfaction guarantee

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🔄 Popular Related Products

• AR-15 Gas Tubes

• Free-Float Handguards

• Suppressor-Ready Muzzle Devices

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❓ FAQs – Adjustable Gas Blocks

Q: Do I need an adjustable gas block for my AR-15?
If you're shooting suppressed, reloading, or want smoother recoil and better reliability, an adjustable gas block is highly recommended.

Q: How do I know which gas block size I need?
Measure your barrel's gas journal. Common sizes include .625", .750", .875", and .936".

Q: What’s the difference between bleed-off and restrictive gas blocks?
Restrictive blocks reduce gas entering the system. Bleed-off blocks expel excess gas — ideal for suppressor setups.

Q: Are clamp-on gas blocks secure?
Yes — when torqued correctly, clamp-on blocks provide a secure, non-marring fit and are favored in precision rifles.

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🛒 Shop Adjustable Gas Blocks for Your AR-15

Dial in your rifle’s performance with a precision adjustable gas block. Whether you’re suppressing, competing, or just want a smoother-shooting AR — we’ve got the right fit for your build.