Faxon AR-15 Gas Blocks – Reliable Fit, Lightweight Design

Faxon gas blocks are engineered for shooters who demand durability and simplicity. Whether you're building a lightweight AR-15 or upgrading a factory rifle, Faxon's low-profile gas blocks deliver precision and stability. Choose from .750” or .625” clamp-on styles, ideal for standard and pencil-profile barrels.

Each block features a 3-screw clamp system that eliminates the need for pinning, making installation easier while offering a rock-solid connection. The low-profile design ensures compatibility with free-float handguards and helps streamline your upper assembly without sacrificing performance.

Perfect for builds focused on accuracy, weight savings, and clean cycling — these gas blocks are manufactured in the USA using high-strength steel and a QPQ nitride finish for corrosion resistance.

---

✅ Why Choose Faxon Gas Blocks from Mounts Plus?

• Clamp-on 3-screw design – no pinning required
• Available in .750” and .625” gas journal sizes
• Low-profile fit under most AR-15 handguards
• Durable nitride finish for longevity
• Fast shipping, trusted service, and real support

 

---

Looking to complete your upper build? Pair your Faxon gas block with one of our AR-15 barrels and a matching gas tube for smooth, reliable performance. Whether you need a .625 or .750 fit, we’ve got you covered.

Explore our full selection of AR-15 gas blocks to compare low-profile and adjustable options from other trusted brands.

Need more high-performance parts from Faxon? Browse our full line of Faxon Firearms parts, or shop all AR-15 parts to build your rifle exactly the way you want.

---

🔧 Frequently Asked Questions

Q: What's the difference between .625 and .750 gas blocks?
A: The size refers to the gas journal diameter on the barrel. .625” is for lightweight/pencil barrels, while .750” is the most common for standard AR-15 barrels.

Q: Do Faxon gas blocks need to be pinned to the barrel?
A: No — the 3-screw clamp-on design provides a secure fit without pinning.

Q: Are Faxon gas blocks compatible with all gas tubes?
A: Yes, they work with carbine, mid-length, and rifle-length gas tubes that follow standard AR-15 specs.

Q: Will they fit under free-float handguards?
A: Absolutely. These gas blocks have a low-profile design that fits under most slim handguards on the market.

Q: Where are Faxon gas blocks made?
A: All Faxon gas blocks are made in the USA with premium machining and finishes.

---