Our favorite for those BIG barrels!! Fits under most minimized handguards and only needs a minimum 1.4” ID. Easy to reach single tool adjustment screw with 15 position adjustability. Rock solid mounting and perfect alignment is a breeze with the SLR gas block jig.

Sentry .936" Set Screw Version - Melonite QPQ Finish

.400" Set Screw Spacing

1.8 oz

- 15-position adjustability from 0 - 0.125" port opening
- Metering screw and screw bore design allows repeatability and reliability only SLR has been able to deliver
- Single tool click to adjust gas metering
- Melonite finish 4140 Precision machined gas block
- Melonite finish 4140 Nexturn Swiss precision metering screw
- Stamped Alloy Flat Spring with 1400deg temper
- Melonite finish 4140 detent plunger
- USES STANDARD GAS TUBE

- Tool, roll pin and mounting screws included

NOTE- Needs Minimum 1.4" ID Handguard if going underneath