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Q&A for Troy Low Profile Gas Block — 7 Questions & 6 Answers

Name Troy Low Profile Gas Block (4.8)
$58.29 $55.39 Save $2.90
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Q
BigWojman, member, from TX, United States, asked on November 14, 2020

I have a bunch of leftover parts from an AR10 6.5 CM build and I am building a DPMS .308 with them. What is spacing of set-screws on this gas block?

A
Answered by Dan, member, from IN, United States, on June 12, 2022

The spacing is .420

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Q
Ian, guest, from PA, United States, asked on December 21, 2021

What is the set screw spacing on this block can't find info. Have SLR dimpling jig.

A
Answered by Dan, member, from IN, United States, on June 12, 2022

The spacing is .420. I use my BRD jig for this.

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Q
Stone48, member, from AR, United States, asked on April 15, 2020

What are the measurements of this gas block? I'm going to buy a UTG 17" slim free float handguard 1.33 in side demotions .I have a M&P 10 .075 barrel

A
Answered by Brandon, member, from UT, United States, on February 22, 2021

This will measure 1" long and will rise about 3/8" above the barrel. Total height should be just under 1.25" and it should fit with most free floating handguards.

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Q
Stone48, member, from AR, United States, asked on April 15, 2020

Do you have the roll pin for this gas block? I can't find any.

A
Answered by Brandon, member, from UT, United States, on February 22, 2021

The roll pin is not included with this gas block, and is most frequently not included with gas blocks but with gas tubes. If you need just replacement roll pins, we do have a set of replacement roll pins available.
https://www.opticsplanet.com/dark-storm-industries-spare-roll-pin-kit.html

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Q
Johnny, member, from TX, United States, asked on April 12, 2018

Does this come with a roll pin?

Expert Answer
A
Answered by Carly R., Gear Expert, from IL, United States, on May 11, 2018

The gas tube roll pin is not included.

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Q
Keith M, member, from CA, United States, asked on May 22, 2024

Will this fit a mp10 16 in barrel? I’m looking at replacing the handguard with a MPN-srai -ml3 -5lbt-00 15 in handguard. What parts are needed ?

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Q
ES, member, from VA, United States, asked on March 05, 2024

Do I need a new gas tube if I'm purchasing this to replace the fixed iron sights already on my barrel?

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Last updated 2025-11-12 UTC.