SLR Sentry 8 Set Screw Adjustable Gas Block

• Sentry .875"  Set Screw Version - Melonite 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 1.35" Minimum ID HG (SLR Ion/ Helix HG's OK)