Adjustable & Low-Profile Clamp-On Gas Blocks for AR-15

Looking for a gas block that offers both security and flexibility? Clamp-on style gas blocks give AR-15 builders an easy, non-permanent option for fine-tuning performance. Whether you're upgrading for suppressed shooting, competition, or general use, these blocks fit securely without damaging your barrel.

Why Choose a Clamp-On Gas Block?

Clamp-on gas blocks wrap around your barrel and tighten using side screws. Unlike set-screw models, they don’t require barrel dimpling or leave permanent marks. This makes them ideal for builders who swap barrels or make frequent changes.

Common reasons to upgrade:

• Adjustable gas flow for suppressor use
• Reduced recoil with bleed-off designs
• Easier maintenance and installation
• Precision tuning for competitive AR builds

Gas Block Options Available

At Mounts Plus, we carry adjustable and non-adjustable clamp-on gas blocks from trusted brands like Superlative Arms, SADLAK, and Yankee Hill Machine.

• Adjustable Bleed-Off Gas Blocks: Control back pressure and recoil
• Low-Profile Clamp-On Blocks: Fit under most AR-15 handguards
• Barrel Sizes: .625", .750", .875", and .936" gas journal diameters

Installation Notes

Clamp-on blocks use torque-tightened side screws to create a solid hold. No permanent modification is required. Just match the block to your barrel’s gas journal diameter, tighten evenly, and you’re ready to go.

Featured Clamp-On Gas Blocks

• Superlative Arms Adjustable Bleed-Off (.750", .875", .936")

• SADLAK Low-Profile Adjustable Model

• Yankee Hill Machine Low-Profile Clamp-On Block

 

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Related AR-15 Parts and Accessories

Looking for more AR-15 upgrades? Check out our full selection of AR-15 gas blocks, including options from Superlative Arms, SADLAK, and Yankee Hill Machine. For additional customization parts, visit our AR-15 parts and accessories section.

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Frequently Asked Questions (FAQ)

What is the advantage of a clamp-on gas block?
It holds securely without marking your barrel, making it easier to swap or upgrade components in the future.

Are clamp-on gas blocks reliable for serious use?
Yes. When installed correctly, they perform as well as set-screw designs, even under hard use.

How do I pick the right size gas block?
Measure your barrel’s gas journal diameter. Common AR-15 sizes include .750", .875", and .936".

Can these gas blocks be used with suppressors?
Absolutely. Adjustable bleed-off models are ideal for tuning gas flow with suppressor setups.

Do I need special tools for installation?
Just an Allen wrench or torque driver—no gunsmithing or specialized tools are necessary.