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Q&A for Aero Precision M4E1 Threaded 11.5in 5.56 w/ATLAS R-ONE Handguard Upper Receiver with Flash Hider — 9 Questions & 6 Answers

Name Aero Precision M4E1 Threaded 11.5in 5.56 w/ATLAS R-ONE Handguard Upper Receiver with Flash Hider (4.6)
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Q
Jorge, member, from TN, United States, asked on February 26, 2022

would this be compatible with m&p sport 2?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on March 04, 2022

Yes, the Aero Precision M4E1 Threaded 5.56 w/ATLAS R-ONE Handguard Upper Receiver will work with a Smith and Wesson M&P Sport 2 Lower.

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Q
allcattle0hat, member, from PA, United States, asked on October 30, 2021

Is the barrel dimpled for the gas block?

Manufacturer Answer
A
Answered by Aero Precision USA, Manufacturer from WA, United States, on February 16, 2022

Our CMV barrels are not currently dimpled for the Gas Blocks.

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Q
oli, member, from CA, United States, asked on August 18, 2021

is this CA legal for a rifle

Manufacturer Answer
A
Answered by Aero Precision USA, Manufacturer from WA, United States, on September 30, 2021

All of our uppers are CA legal. It depends on how the end user configures the rifle to determine if it is compliant.

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Q
Jc, guest, from SC, United States, asked on June 11, 2020

Does it fit any ar15 stripped lower

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on May 26, 2021

Yes, this upper will be compatible with any mil-spec AR15 lower receiver.

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Q
Jay Cobb, guest, from SC, United States, asked on April 12, 2019

What’s all included? Is it just the handguard and barrel? Do I need to purchase BCG and charging handle?

A
Answered by brent, member, from WA, United States, on June 27, 2019

It does not come with the bcg or charging handle.

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Q
David, guest, from AL, United States, asked on January 18, 2019

What is the difference between the 2 uppers

A
Answered by Christopher, guest, from TN, United States, on January 26, 2019

One is Black, the other if Flat Dark Earth if you scroll to bottom of page it gives part number for each

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Q
Kit, member, from NE, United States, asked on March 05, 2025

What is the actual handguard length?. Wanting to run the 3.3" Rifle speed adjustable block, but it needs to be a 10", not 10.5.

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Q
J, guest, from TX, United States, asked on January 29, 2025

What is the length, in inches, of the actual hand guard? 10.5?

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Q
Cory Nolan, member, from FL, United States, asked on September 14, 2024

Will I be able to put an surfire muzzle brake and sure fire blast regulator. 1/2-28. On this barrel

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Last updated 2026-06-30 UTC.