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Q&A for Breek Arms Plan B Sentinel Closed Flash Hider — 4 Questions & 4 Answers

Name Breek Arms Plan B Sentinel Closed Flash Hider (4.7)
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Q
Jonathan Marcinko, member, from AZ, United States, asked on January 04, 2026

What is the protrusion depth for suppressor mounting?

Manufacturer Answer
A
Answered by Breek Arms, Manufacturer from MN, United States, on January 08, 2026

The protrusion depth into a suppressor when using our Plan B Hub mount is 1.70 inches.

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Q
Thumper, member, from VA, United States, asked on December 26, 2025

What is the bore size? Big enough for 9mm?

Manufacturer Answer
A
Answered by Breek Arms, Manufacturer from MN, United States, on December 31, 2025

Yes, our flash hiders are big enough for a 9mm, they are bored with a 0.368" drill.

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Q
GOATITWWU, member, from GA, United States, asked on September 28, 2025

13/16 flats? Tia

Manufacturer Answer
A
Answered by Breek Arms, Manufacturer from MN, United States, on December 31, 2025

Yes, 13/16" wrench flats on our Plan B muzzle devices. We also offer a wrench for installing the muzzle device and the Hub.

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Q
Yankchef, member, from TX, United States, asked on September 01, 2025

Is this pre drilled for a pnw?

Manufacturer Answer
A
Answered by Breek Arms, Manufacturer from MN, United States, on September 18, 2025

Yes, the Plan B Sentinel is drilled for pin and weld.

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Last updated 2025-11-12 UTC.