SLR Rifleworks Sentry Adjustable Gas Block Clamp On

Sentry .625" Clamp On Version Melonite FinishSpecifications: 15-position adjustability from 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 1.2 oz US PATENT NO. 9,410,756 USES STANDARD GAS TUBE Tool, roll pin and mounting screws included WORKS WITH ALL AR15/AR10 HANDGUARDS