Spike's Tactical .750 Micro Gas Block with Screws - SUGB120

The Spike's Tactical .750 Micro Gas Block with Screws is a low-profile gas block engineered for AR-15 builders and shooters who demand reliability without bulk. Machined from solid billet steel and finished with a durable black nitride coating, this .750-diameter block delivers the strength needed for consistent operation while keeping your rifle's profile clean. Whether you're building a precision rifle, a lightweight hunting AR, or a plinker that doesn't need full-size components, a micro gas block lets you run handguards closer to the bore and reduces overall weight without compromising function.

Spike's Tactical reputation in the AR platform stems from attention to manufacturing quality, and this gas block reflects that standard. The billet construction means no forging shortcuts—what you get is a solid chunk of steel precisely shaped and hardened. The black nitride finish protects against corrosion and wear, holding up to the cycles and elements that come with regular use and maintenance.

Installation is straightforward: the included dual set screws secure the block to your barrel, locking it firmly in place. This is a do-it-yourself component suited to anyone comfortable with basic AR-15 assembly or a gunsmith handling a full build. If you're upgrading an existing rifle or finishing a lower receiver into a complete AR, a micro gas block like this one pairs well with slim-profile handguards and lets you customize your setup to your actual needs rather than settling for oversized components.

Key Features

• Solid billet steel construction for durability and precision
• Black nitride coating resists corrosion and wear
• .750 diameter fits standard AR-15 barrels
• Low-profile design works with slim handguards and reduces overall rifle weight
• Includes dual set screws for secure barrel mounting

Specifications

Frequently Asked Questions

Will this .750 micro gas block work with my AR-15 build?

Yes, the .750 diameter is standard for AR-15 barrels. Confirm your barrel's gas port is sized for a micro block (typically .074") and that your intended handguard accommodates a .750 gas block before ordering. The included set screws secure it directly to the barrel.

What's the advantage of a micro gas block over a standard full-size block?

Micro gas blocks have a smaller footprint, allowing you to run slim, free-floating handguards closer to the barrel for a cleaner profile and lighter overall weight. They function identically on the gas system—this is purely a fit-and-form choice for builders prioritizing ergonomics or aesthetics.

Do I need a gunsmith to install this, or can I do it myself?

Installation requires basic AR-15 assembly knowledge and tools: you'll secure the block to your barrel with the included set screws and align the gas tube. Many owners handle this themselves during a build; a gunsmith can also install it if you prefer professional assembly.

What does the black nitride coating do?

Black nitride protects the steel from rust, wear, and corrosion caused by powder residue, moisture, and repeated handling. It also provides a clean, professional finish that's durable enough for field and range use.