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Q&A for Sharps Rifle Company AR-15 Xtreme Performance Bolt XPB Carrier Group (BCG) — 2 Questions & 2 Answers

Name Sharps Rifle Company AR-15 Xtreme Performance Bolt XPB Carrier Group (BCG) (5)
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Q
Tweedy, member, from NC, United States, asked on May 07, 2023

Will this work for 300 blackout

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on May 15, 2023

Yes, the Sharps Rifle Company AR-15 Xtreme Performance Bolt XPB Carrier Group will function as intended with 300 Blackout.

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Q
Blackjack, member, from WI, United States, asked on September 08, 2022

What type of coating is on the bolt carrier? Is it phosphate or nitrided?

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A
Answered by Ethan, Gear Expert, from IL, United States, on September 08, 2022

The Sharps Rifle Co. AR-15 Xtreme Performance Bolt XPB Carrier Group undergoes a 24-hour thermal cycle proprietary heat treatment, and is finished with the FDE (Flat Dark Earth) ZrN (Zirconium Nitride) Coating.

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Last updated 2025-11-12 UTC.