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Q&A for Bushmaster XM-15 Complete Upper w/Bolt 300 AAC Blackout Flat Top M4-Profile 16 in.Barrel w/ Rifle Length Quad Rail (7 in. Pistol Length Gas Tube) Pre-Ban — 5 Questions & 5 Answers

Name Bushmaster XM-15 Complete Upper w/Bolt 300 AAC Blackout Flat Top M4-Profile 16 in.Barrel w/ Rifle Length Quad Rail (7 in. Pistol Length Gas Tube) Pre-Ban (5)
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Q
ARTIS, member, from FL, United States, asked on July 28, 2019

Will the BCG of this product support Auto fire. What I mean is does the bolt compatible with Auto fire?

Expert Answer
A
Answered by Jonathan D., Gear Expert, from IL, United States, on October 13, 2019

Bushmaster does not state whether the bolt carrier is AR15 or M16 spec, please contact them directly for this information.

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Q
Gunderson, guest, from TX, United States, asked on May 26, 2019

With what is the barrel lined, if any? Is it a nitride barrel?

Expert Answer
A
Answered by Jonathan D., Gear Expert, from IL, United States, on October 13, 2019

It is not lined it just has a nitride finish.

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Q
Fenix Cactus, member, from TX, United States, asked on March 24, 2019

Is it a threaded barrel? What kind of muzzle break is on this?

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A
Answered by Gunderson, guest, from TX, United States, on May 28, 2019

It is a threaded barrel. It comes with an AAC muzzle break.

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Q
Mitch, guest, from WA, United States, asked on June 20, 2018

Will this fit my Bushmaster .223 lower? If so is the anything else I need to make this a functional asset?

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on October 10, 2018

This should work on your Bushmaster .223 lower receiver with no additional parts needed.

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Q
Craigen, guest, from LA, United States, asked on March 22, 2018

What is the twist rate on this barrel

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on May 26, 2018

The twist rate is 1:7

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