Ultradyne Quantum Gas Block Adj .750

An Ultradyne Quantum gas block adjustable .750 gives you real control over your AR-15's action. Instead of running whatever gas volume your barrel port and ammunition combination throw at you, an adjustable gas block lets you dial in the exact amount of gas your rifle needs—and nothing more. That means a softer, cleaner cycle that reduces wear, cuts down on fouling, and lets you shoot faster, more accurately, especially when you're running suppressed or pushing hotter loads.

Built from 416 stainless steel with a salt bath nitride finish, this block is lightweight, fully machined in the USA, and tough enough for serious use. The real win is tuning: instead of your bolt carrier group hammering back hard against the receiver extension, you dial it back to just enough gas to reliably extract and feed the next round. Competitive shooters, suppressor users, and anyone running ammunition warmer than factory spec will feel the difference immediately—faster splits, less recoil, and a rifle that's genuinely easier to shoot well.

The .750" bore size fits standard AR-15 barrels. With 16 levels of adjustment, you've got room to tune for different ammo and conditions. And because it breaks down for cleaning, you can maintain it without hassle. Whether you're dialing in a match rifle, taming a suppressed build, or just tired of your gun beating itself and you to death, an adjustable gas block is one of the best upgrades you can make.

Key Features

• 16 adjustment levels for fine-tuning gas volume to your specific rifle and ammunition
• Reduces recoil and improves follow-up shot speed and accuracy
• Minimizes wear and fouling by eliminating excessive gas cycling
• Disassembles for cleaning and maintenance
• 100% machined in the USA from 416 stainless steel
• Salt bath nitride finish for durability
• Lightweight design

Specifications

Frequently Asked Questions

What barrel size does this gas block fit?

The Ultradyne Quantum adjustable gas block is designed for .750" diameter barrels, which is the standard size on most AR-15 builds.

Will an adjustable gas block help with suppressed shooting?

Yes. Suppressors increase back-pressure and send more gas rearward. An adjustable gas block lets you dial down the gas volume to run reliably suppressed without the excessive recoil and noise of over-gassing, and it reduces wear on your rifle.

How many adjustment positions does it have?

The block features 16 levels of adjustment, giving you precise control to tune your rifle's performance across different ammunition loads and shooting conditions.

Can I take this gas block apart for cleaning?

Yes. The gas block disassembles, so you can clean and maintain it without replacing the entire unit.