Spike's Tactical .625 Micro Gas Block with Screws

The Spike's Tactical .625 Micro Gas Block with Screws is a precision-engineered component designed for AR-15 builders and gunsmiths who demand reliable, low-profile performance. This billet steel gas block is built tough for users who run tight handguards or need a compact sight picture, and its included screws make installation straightforward without hunting for the right hardware.

Crafted from solid billet steel and finished with black nitride coating, this micro gas block resists corrosion and wear through heavy use—whether you're tuning a precision rifle, running suppressed, or pushing high round counts at the range. The double set screw design locks the block securely to your barrel, minimizing shift and ensuring consistent gas regulation.

At .625 inches in diameter, this is the right choice if you're running a slim setup where full-size blocks won't fit or obstruct your optics, rail system, or aesthetics. It's a no-compromise part from a builder-trusted brand.

Key Features

• Billet steel construction for durability and precision fit
• Black nitride coating resists corrosion and wear
• .625 micro diameter for slim, low-profile AR builds
• Double set screw design for secure barrel attachment
• Includes screws—no need to source hardware separately

Specifications

Frequently Asked Questions

Will this gas block work with my slim handguard?

Yes—the .625 micro diameter is designed for compact builds where standard-size blocks won't fit under slim, free-float handguards or integrated rail systems.

Is this gas block compatible with all AR-15 barrels?

This block is designed to clamp onto AR-15 barrels via the included double set screws. Verify your barrel is the correct profile for a .625 gas block before ordering.

What's included?

The gas block comes with the screws needed for installation, so you won't need to buy fasteners separately.

Does the black nitride finish hold up to suppressor use?

Black nitride coating provides corrosion resistance, but suppressed shooting generates more heat and carbon. Routine cleaning and maintenance will keep your gas block in top condition.