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Q&A for Optics Planet Exclusive Aero Precision M4E1 Enhanced 5.56 Barrel Complete Upper Receiver — 17 Questions & 17 Answers

Name Optics Planet Exclusive Aero Precision M4E1 Enhanced 5.56 Barrel Complete Upper Receiver
As Low As $609.99 Save $20.98
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Q
Garry, member, from WA, United States, asked on September 05, 2020

Is anything needed with this upper? Or is it complete plug n play? Also is there any more "specs" ie gas port size ECT.thanks

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

Yes, these uppers will be ready for use once paired with a complete lower receiver. The gas port size is 0.0935"

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Q
Joe, guest, from CA, United States, asked on August 24, 2020

What material is the BCG?

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

The bolt carrier group is made of 8620 steel.

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Q
Kellner, member, from CA, United States, asked on August 21, 2020

What type of barrel is this?

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

The 10.5" and 16" are 5.56, and the 18" is .223 Wylde.

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Q
Graham, member, from NC, United States, asked on August 15, 2020

What is the barre twist rate for the 5.56 10.5” barrel? Thank you

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

It has a 1-7 twist.

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Q
Marcus, member, from NY, United States, asked on August 01, 2020

Is the barrel 1/2x28?

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

Yes, it is.

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Q
Donovan, guest, from OR, United States, asked on July 26, 2020

What is the twist rate of the 18” upper? Apar900003

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

The 18" barrel has a 1-8 twist.

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Q
ben, member, from WA, United States, asked on June 12, 2020

Is the flash hider pinned or just threaded on?

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

The flash hider is not pinned, it can be threaded on/off.

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Q
tim, guest, from NV, United States, asked on June 10, 2020

Is this a mid weight barrel or pencil barrel?

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

The 10.5" and 16" barrels are mil-spec contour and the 18" barrel is fluted.

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Q
Elliot, guest, from NY, United States, asked on June 07, 2020

Does this have a 16" barrel? Does it come with BCG and charging handle?

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

MPN: APAR900002 is the model with a 16" barrel and it does include a bolt carrier and charging handle.

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Q
Coul1, member, from AZ, United States, asked on June 01, 2020

What is the twist rate on this upper?

Expert Answer
A
Answered by Nick B., Gear Expert, from IL, United States, on November 10, 2021

the 18" is 1-8, and the 16" and 10.5" are 1-7.

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