Slr Rifleworks Sentry Gas Block .750 Adjustable Steel Set Screw
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SLR Rifleworks
Overview
The SLR Rifleworks Sentry Gas Block is an adjustable gas block designed to fit a .750 diameter gas system, allowing for fine-tuning of gas flow to optimize the performance of your AR-15. Constructed from steel and finished with nitride for enhanced durability, it features a set screw mounting type that ensures secure installation. This gas block is particularly popular in mid-length gas system builds chambered in 5.56 NATO, providing builders with the flexibility needed for various shooting applications.
Specifications
Slr Rifleworks Sentry Gas Block .750 Adjustable Steel Set Screw
September 2026 on GunPartPicker
Slr Rifleworks Sentry Gas Block .750 Adjustable Steel Set Screw ranked #34 of the 67 gas blocks builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #42 of the 193 gas blocks builders have added. Builds with this gas block are split between 5.56 NATO (60%) and .223 Wylde (27%), split between mid-length (52%) and carbine-length (26%) gas systems, and nearly all AR-15.
It was hard to find in September 2026, in stock on only 13 of the 23 days we checked, and today 2 of the 3 retailers we track have it in stock. Prices barely moved in September 2026, holding around $134.56, so there haven't been real sales lately. Buying today, the lowest price is $134.56 at Optics Planet, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
FAXON Firearms 16" 223 Wylde Match Barrel Stainless Steel Black
Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate
Wilson Combat AR-15 Billet Upper Receiver
Aero Precision M4E1 Stripped AR-15 Lower Receiver - FDE Cerakote
Centurion Arms Rifle, 12"
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 9 →Builds in the community that include the Slr Rifleworks Sentry Gas Block .750 Adjustable Steel Set Screw
| Build | Parts | Total |
|---|---|---|
 | 22 | $1365.83 |
 | 37 | $6591.65 |
 | 9 | $1905.07 |
 | 25 | $2276.65 |
 | 18 | $1420.74 |
 | 13 | $2925.50 |
| 16 | $1911.47 |
 | 28 | $2262.98 |
| 14 | $3038.06 |
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