---

Low Profile Gas Blocks – Clamp-On, Adjustable & Micro Options for AR-15s

Looking to build a sleeker, lighter AR-15 setup? A low profile gas block is one of the smartest upgrades you can make. Whether you're running a free-float handguard, adding a suppressor, or improving your rifle’s balance, this component delivers both form and function — giving your build the clearance and consistency it needs.

At Mounts Plus, we carry a full lineup of AR-15 gas blocks, including clamp-on, set screw, micro, and adjustable styles. With options to fit .625, .750, .875, and .936 barrel diameters, you’ll find the right fit for every build.

---

🔧 Why Use a Low Profile Gas Block?

Low profile gas blocks replace the traditional A2 front sight tower, offering a slimmer and more modular gas system. They sit flush under most free-float handguards and are favored by tactical shooters, competition builders, and suppressor users.

Benefits include:

• Clean, compact fit under extended handguards

• Lightweight for better rifle balance

• Improved barrel harmonics and heat distribution

• Compatible with free-float rail systems

• Essential for DMRs, 3-Gun setups, and suppressed builds

---

🧩 Types of Gas Blocks We Carry

Not all gas blocks are created equal — here’s how they compare:

Style	Best For
Clamp-On Gas Block	Easy install on non-dimpled barrels; doesn’t mar barrel finish
Set Screw Gas Block	Rock-solid hold for dimpled barrels; proven long-term reliability
Adjustable Gas Block	Fine-tunes gas system for suppressors or soft cycling
Micro Gas Block	Ultra-lightweight; perfect for minimalist or competition builds
Extended Nose Gas Block	Extra surface area for better alignment on longer gas systems

Our top brands include SADLAK, PRI, Superlative Arms, and Aim Sports — trusted by builders nationwide.

---

⚙️ Sizing & Fitment

Before choosing a gas block, match it to your barrel’s gas port diameter:

• .625" – often used on pencil or lightweight barrels

• .750" – most common for standard AR-15 barrels

• .875" & .936" – found on heavy-profile or precision barrels

All our gas blocks are made from durable steel or lightweight aluminum, and many are available in phosphate, nitride, or parkerized finishes for long-term wear resistance.

---

🛠️ Installation Tips

Most gas blocks install using just a Torx or hex wrench and a roll pin punch. For clamp-on models, proper torque is key. Adjustable gas blocks may require tuning during live fire to optimize cycling — especially on suppressed rifles.

Pro tip: Clamp-on gas blocks are ideal for custom builds that lack a pre-dimpled barrel and don’t require permanent alteration.

---

💬 FAQ

Q: What size low profile gas block does my AR-15 need?
A: The most common size is .750", but it depends on your barrel's gas port diameter. Check the manufacturer specs or measure with a caliper before ordering.

Q: Should I use an adjustable gas block?
A: Adjustable blocks are great for tuning suppressed rifles, reducing recoil, or minimizing gas blowback. If you're shooting suppressed or want smoother cycling, it's a smart upgrade.

Q: What’s the difference between clamp-on and set screw gas blocks?
A: Clamp-on blocks are easier to install on smooth barrels and won’t mar the surface. Set screw blocks require dimples but offer maximum stability for high-volume shooting.

Q: Will a low profile gas block fit under any handguard?
A: Most free-float handguards are designed to clear low profile gas blocks. Micro and minimalist blocks are best for tight spaces or slim rails.

Q: Can I install a gas block without a gunsmith?
A: Yes, with the right tools. Most installs require only basic hand tools. Adjustable models may need tuning with live fire, but basic setup is DIY-friendly.

---

🔍 Optimize Your AR Build

Whether you’re upgrading an existing rifle or starting from scratch, the right low profile gas block improves performance and gives your AR a modern, streamlined look. Shop our collection now to find the perfect fit for your barrel, build, and shooting goals.