Answers for What gas block size do I need for this barrel? Thank you.

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Faxon Firearms + Gun Parts Faxon Firearms Gun Parts Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Q&A Question - What gas block size do I need for this barrel? Thank y Faxon Firearms + Gun Parts Faxon Firearms Gun Parts + Rifle Parts Faxon Firearms Rifle Parts + Rifle Barrels Faxon Firearms Rifle Barrels Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Q&A Question - What gas block size do I need for this barrel? Thank y Faxon Firearms + Gun Parts Faxon Firearms Gun Parts + AR 15 Parts Faxon Firearms AR15 Parts + AR15 Barrels Faxon Firearms AR15 Barrels Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Q&A Question - What gas block size do I need for this barrel? Thank y Faxon Firearms + Gun Parts Faxon Firearms Gun Parts + Rifle Parts Faxon Firearms Rifle Parts + AR 15 Parts Faxon Firearms AR15 Parts + AR15 Barrels Faxon Firearms AR15 Barrels Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Q&A Question - What gas block size do I need for this barrel? Thank y Faxon Firearms + Gun Parts Faxon Firearms Gun Parts + AR 15 Parts Faxon Firearms AR15 Parts Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Q&A Question - What gas block size do I need for this barrel? Thank y Faxon Firearms + Gun Parts Faxon Firearms Gun Parts + Rifle Parts Faxon Firearms Rifle Parts + AR 15 Parts Faxon Firearms AR15 Parts Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Q&A Question - What gas block size do I need for this barrel? Thank y Faxon Firearms + Gun Parts Faxon Firearms Gun Parts + Rifle Parts Faxon Firearms Rifle Parts Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel Q&A Question - What gas block size do I need for this barrel? Thank y

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Faxon Firearms 16in Legal, SLIM Perm 3 Port Brake,4.5in PENCIL, 5.56 NATO, Mid-Length, 4150 QPQ Barrel

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Answered by mike, member, from NJ, United States, on March 04, 2018

Gas Block Diameter: .625"
Gas Block Journal Length: 1.9"

5 of 5 found the following answer helpful.

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Answered by Rod, guest, from MI, United States, on March 11, 2019

The Faxon website says the Gas Block Journal Length = 1.1" on this barrel.

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