TacFire MAR001S2 Low-Profile Micro Gas Block .750" Black Oxide Steel

A low-profile micro gas block is one of those small parts that makes a real difference in how your AR runs, and the TacFire MAR001S2 is built to handle serious use. This .750" gas block is CNC precision machined from quality steel and heat treated for durability, with a black oxide finish that resists corrosion and erosion. If you're building or tuning an AR with a .750-diameter barrel, a low-profile design keeps your sight line cleaner and your rail real estate clear for optics and accessories.

The MAR001S2 comes ready to install with roll pins and set screws included, so you have everything you need for a solid gas port connection. Low-profile gas blocks are popular on modern tactical builds and hunting rifles where keeping the profile slim helps with optics mounting and doesn't add unnecessary bulk to your upper receiver.

TacFire's attention to precision machining and heat treatment means you're getting a part that'll cycle reliably and hold up to repeated shots without wearing out the barrel journal. Whether you're running a .750" pencil barrel, a rifle-length tube, or a mid-length gas system, proper gas block fitment and durability matter for consistent function.

Key Features

• CNC precision machined from quality steel
• Heat treated for durability and longevity
• Black oxide finish resists corrosion and erosion
• Low-profile design maintains clean sight picture and rail space
• Compatible with .750" diameter barrels
• Includes roll pins and set screws for installation

Specifications

Frequently Asked Questions

What barrel diameter does this gas block fit?

The TacFire MAR001S2 is designed for .750" diameter barrels, so verify your barrel's gas port diameter before ordering.

What's included with this gas block?

The gas block ships with roll pins and set screws needed for installation, so you won't need to source hardware separately.

Why would I choose a low-profile gas block?

Low-profile designs keep your upper receiver slim and unobstructed, giving you more rail space for optics, lights, and other accessories, and maintaining a cleaner sight picture on top of your receiver.

Is this suitable for hunting or tactical builds?

Yes—the heat-treated steel construction and erosion-resistant black oxide finish make the MAR001S2 reliable for both hunting and tactical AR builds with .750" barrels.