Brownells 75th Anniversary - A Shooting Heritage
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Lock Down Your Adjustable Gas Block

The SLR Rifleworks Sentry Adjustable Set-Screw Gas Block ensures that AR-15 shooters have the ability to fine-tune their gas system for optimum operation.

The SLR Rifleworks Sentry Adjustable Set-Screw Gas Block is constructed with a simple metering system that doesn't use springs or balls and is adjustable through the use of an included tool.

  • Machined from 4140 steel
  • Features QPQ Melonite finish
  • Comes in .625, .750, .875 and .936 diameter sizes

The SLR Rifleworks Sentry Adjustable Set-Screw Gas Block is equipped with two set screws that lock the block into the barrel for an ideal gas seal.


Big Book Catalog, Issue:73, Page:024

SLR RIFLEWORKS - AR-15 SENTRY ADJUSTABLE GAS BLOCKS STEEL SET SCREW

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Inside Diameter: .625

Material: Steel

Style: Adjustable

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Inside Diameter: .750

Material: Steel

Style: Adjustable

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Inside Diameter: .875

Material: Steel

Style: Adjustable

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Inside Diameter: .936

Material: Steel

Style: Adjustable