Features/Specifications: .400 inch Set Screw Spacing. Note- If you have a barrel with no dimple or one dimple under the gas port either our .400 or .450 set screw spacing blocks will work fine. There is no difference in the blocks just the front set screw location. 15-position adjustability from 0 – 0.125 inch 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 Nexturn Swiss precision metering screw. Proprietary Alloy Flat Spring with 1400deg temper. Melonite finish 4140 detent plunger. USES STANDARD GAS TUBE. Works with ALL AR15/AR10 Handguards. Included Accessories: Tool, roll pin and mounting screws Specifications for SLR Sentry 6 .625 Adjustable Gas Block w/.400 in. Set Screw Spacing: Manufacturer: SLR Coating: Melonite QPQ Finish Gas Block Journal Size-Diameter: .625 in Gun Make: AR Platform Additional Features: w/.400 in. Set Screw Spacing Gas System Type: Direct Impingement Features of SLR Sentry 6 .625 Adjustable Gas Block w/.400 in. Set Screw Spacing: .400 inch Set Screw Spacing. Note- If you have a barrel with no dimple or one dimple under the gas port either our .400 or .450 set screw spacing blocks will work fine There is no difference in the blocks just the front set screw location. 15-position adjustability from 0 – 0.125 inch 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 Nexturn Swiss precision metering screw. Proprietary Alloy Flat Spring with 1400deg temper. Melonite finish 4140 detent plunger. USES STANDARD GAS TUBE. Works with ALL AR15/AR10 Handguards. Included Accessories: Tool roll pin and mounting screws Package Contents: SLR Sentry 6 .625 Adjustable Gas Block w/.400 in. Set Screw Spacing
2 reviews for SLR Sentry 6 .625 Adjustable Gas Block w/.400 in. Set Screw Spacing
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Private Lawrence –
This is a great adjustable gas block! I have one like this one and also a similar SLR titanium adjustable gas block.Be aware that adjustable gas block must have routine maintenance so they do not carbon lock up and stop working.I routinely turn the adjustment screw in and out while spraying Kroil penetrating oil on the adjustment screw and into the gas block.I also apply a silver anti-seize lubricant to the adjustment screw to be able to easily turn the screw.
Ken –
I had one of these in size .750 on my 300 Blackout pistol. Shot it for maybe 200 rounds with a lightweight bolt carrier in the gun. Decided to try a full-weight BCG, so opened the gas port up as necessary for the heavier BCG. Shot maybe 60-80 rounds, then put the LW BCG back in. I could not turn the gas screw back in. So I contacted SLR rifle works. They were nice enough to immediately ship me a replacement. Now I have put 100-120 rounds thru it, while being very careful to turn the gas off after each range session to remove any carbon build up. Today I shot 40 rounds and then thought it was a little over-gassed, so I tried to turn the gas down by one click. It would not move. It will allow more gas, but has lost ability to turn gas down anymore. I removed the screw, and it was covered with the copper/brass color of the bullets I was using. Was kinda splotchy metal galled onto the screw. Tried some gun cleaner with some 400 grit sand paper. Cleaned the screw up, but it must be stuffed up on the inside bore. Still won't adjust below setting 6 where it was for the last 40 rounds. It would be fine if I never planned to adjust it again, but I plan on putting a suppressor on this gun, and will need to adjust when I use it. I'm shipping back this 3rd one in never used condition. Just can't trust it to work. A real shame because it is light and appears very well made.