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Q&A for Spikes Tactical ST Micro Rifle Gas Block — 5 Questions & 7 Answers

Name Spikes Tactical ST Micro Rifle Gas Block (4.9)
$47.46 $29.99 Save Up to 38%
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Q
Bud, member, from FL, United States, asked on January 18, 2025

Does this gas block come with "Knurled Cup Point" set screws?

Manufacturer Answer
A
Answered by Spikes Tactical, Manufacturer from FL, United States, on July 23, 2025

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.

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Q
Joseph Dove, member, from TX, United States, asked on November 07, 2018

What is the center to center measurement of the set screws?

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on February 02, 2021

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

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Q
Sloan, member, from SC, United States, asked on February 15, 2023

Will it fit inside a rail? Or what’s the height on it?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on August 07, 2023

The Spikes Tactical ST Micro Rifle Gas Block will fit inside most handguards. However, Spikes Tactical does not state a height for the Spikes Tactical ST Micro Rifle Gas Block or a certain internal diameter handguard needed for the Spikes Tactical ST Micro Rifle Gas Block.

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Q
Clayton, guest, from NE, United States, asked on November 12, 2021

What size to replace an a2 sight?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on March 11, 2022

Most AR15 rifles and pistols that utilize a fixed front sight gas block use a .750" gas journal. However, it is not always the case. More than likely you would need the .750" Spikes Tactical ST Micro Rifle Gas Block, but I would still recommend emailing us at Techsales@opticsplanet.com and letting us know what specific rifle/pistol you have. That way we can confirm the exact size of your gas journal.

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Q
jjoo, member, from CA, United States, asked on January 24, 2019

Is this one include roll pin or Retention Pin to set gas tube?

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on February 02, 2021

This uses a roll pin for the gas tube.

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