+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Spikes Tactical ST Micro Rifle Gas Block Up to 38% Off — 2 models

Spikes Tactical Gas Block Micro .750 w/Two Set Screws SUGB120
Spikes Tactical Gas Block Micro .625 w/Two Set Screws SUGB110
Spikes Tactical Gas Block Micro .750 w/Two Set Screws SUGB120
1 of 2 images
Spikes Tactical Gas Block Micro .750 w/Two Set Screws SUGB120
Spikes Tactical Gas Block Micro .625 w/Two Set Screws SUGB110
2 of 2 images
Spikes Tactical Gas Block Micro .625 w/Two Set Screws SUGB110

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Questions & Answers
Does this gas block come with "Knurled Cup Point" set screws? Manufacturer Answer

The Sig Sauer M400 typically uses a mid-length gas system, which corresponds to a mid-length gas tube measuring approximately 11.75 inches. This gas system is commonly paired with 16-inch barrels, which are standard for many M400 models.

by Spikes Tactical, Manufacturer, July 23, 2025
See 1 More Answer
What is the center to center measurement of the set screws? Expert Answer

The manufacture does not provide these specs, we recommend contacting Spikes Tactical for this information.

by Nick B., Gear Expert, February 2, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Love All Things Spikes Tactical by Gladiator077, Verified Owner, February 26, 2021
Replacing A2 front sight on my AR-15 to add a new handguard and needed a low profile gas block. Of course it works like it's supposed to. Went with Spikes Tactical on this gas block because it's Spikes Tactical.
1/1 found this helpful
Helpful Positive Review
Great Gas Block by Matt, Verified Owner, April 10, 2024
If you’re not getting an adjustable block this is the way to go. Great fit and an overall solid block. Have always liked Spikes tactical products.
1/1 found this helpful
Helpful Positive Review
Nice, solid gas block by AP, May 14, 2021
I got this specifically because of the approximately .420 screw hold spacing for a Daniel Defense 10.3 barrel. The DD barrels come pre-dimpled from the factory, and this one does match up almost exactly based on my calipers. It appears to have a nit...
Read More...
2/2 found this helpful
Most Recent Reviews
Great product by Shooter86, Verified Owner, April 5, 2025
Fit and finish are spot on. Installation was great.
Most Recent Reviews
Adjustable by George Currera, Verified Owner, June 18, 2024
I bought this to make my own adjustable gas block.
Most Recent Reviews
Micro gas block by CK, Verified Owner, March 20, 2024
This is a good-looking gas block, but it won’t work on my current build. The .625 build I started needs a barrel, but the one I ordered is no longer available. I’ll probably keep it to complete it later. Will up dat my review if I get to use it. Migh...
Read More...
Read All 7 Reviews
Show In Stock Only
2 Models Available
Size
All
Search

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Spikes Tactical ST Micro Rifle Gas Block

High quality standard AR-15 height double set screw gas block.image

Specifications for Spikes Tactical ST Micro Rifle Gas Block:

Manufacturer: Spikes Tactical
Coating: Black Nitride
Fabric/Material: Solid Billet Steel
Gun Model: AR-15
Weight: 1.9 oz
Additional Features: w/Two Set Screws
Condition: New
Country of Origin: USA

Features of Spikes Tactical ST Micro Rifle Gas Block:

  • 0.750
  • Low Profile Gas Block
  • Solid Billet Steel
  • .750 I.D.
  • Black Nitride Coating
  • Weight: 1.9oz
  • 0.625
  • Low Profile Gas Block
  • Solid Billet Steel
  • .625 I.D.
  • Black Nitride Coating
  • Weight: 1.5oz

Package Contents:

  • Spikes Tactical ST Micro Rifle Gas Block

What firearm models does the manufacturer say Spikes Tactical ST Micro Rifle Gas Block is compatible with?

The manufacturer says that Spikes Tactical ST Micro Rifle Gas Block is compatible with AR-15

Spikes Tactical ST Micro Rifle Gas Block Orderable Models

List of Orderable Models

  • Spikes Tactical Gas Block Micro .750 w/Two Set Screws, SUGB120 , MPN: SUGB120 , UPC: 815648021399 , Code: 2A8-RGB-STMRGB-SUGB120
  • Spikes Tactical Gas Block Micro .625 w/Two Set Screws, SUGB110 , MPN: SUGB110 , UPC: 815648021382 , Code: 2A8-RGB-STMRGB-SUGB110
Compare (0)
1 item has been added
Add at least two items to compare