Slr Rifleworks Sentry Gas Block .625 Adjustable Steel Set Screw

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Slr Rifleworks Sentry Gas Block .625 Adjustable Steel Set Screw - Gas Block for AR-15 - view 1
Slr Rifleworks Sentry Gas Block .625 Adjustable Steel Set Screw - Gas Block for AR-15 - view 2
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SLR Rifleworks

Overview

The SLR Rifleworks Sentry Gas Block features a .625 diameter and is designed to be adjustable, allowing you to fine-tune the gas flow for optimal performance. Made from steel and finished with nitride for increased durability, this set screw mounting gas block provides a secure attachment to your barrel, ensuring reliability during operation. It is particularly suited for mid-length gas systems in 5.56 NATO builds, making it a popular choice for those looking to enhance their rifle's gas management.

Specifications

MPNSA6-SM
Gas Block Diameter.625
FinishNitride
MaterialSteel
Mounting TypeSet Screw
AdjustableYes

Available Merchants(3)

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Optics Planet
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$142
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Primary Arms
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$149
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Brownells
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Out of Stock
$130

Build history on GunPartPicker

Builders on GunPartPicker first added the Slr Rifleworks Sentry Gas Block .625 Adjustable Steel Set Screw to a build in April 2026.

It was out of stock everywhere we track for all of September 2026, and today 2 of the 3 retailers we track have it in stock. Buying today, the lowest price is $141.64 at Optics Planet, above September's low of $130.32, so a better deal may come back.

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Builds in the community that include the Slr Rifleworks Sentry Gas Block .625 Adjustable Steel Set Screw

BuildPartsTotal
LMT 16" 5.56 build
LMT 16" 5.56
24$6498.43

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