$119.99
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Sentry 6 Set Screw Adjustable Gas Block

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SKU:
SA6-SM
UPC:
810646034631
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SKU:SA6-SM ,UPC:

Info

SKU:
SA6-SM
UPC:
810646034631

Description

Sentry .625" Set Screw Version - Melonite Finish

.400" Set Screw Spacing

1.3 oz

US PATENT NO. 9,410,756

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" 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
- Proprietary Alloy Flat Spring with 1400deg temper
- Melonite finish 4140 detent plunger
- USES STANDARD GAS TUBE

- Tool, roll pin and mounting screws included

Works with ALL AR15/AR10 Handguards

INSTRUCTIONS

1 Review

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  • Earl - Mar 16th 2016

    5

    This may not be the cheapest but you get what you pay for On my 11.5" mid-length barrel, the adjustment nut is flush with the front of my 10.5" rail, so access for adjustment is easy. I used SLR's .625 dimpling jig to dimple my barrel. White the set screws seemed solid enough, I wanted to pin the gas block for added security. On the right side of the gas block is a flat and a starter hole to make this painless. I used a 1/8" cobalt bit and a drill press to cleanly get through the QPQ finish. I'm amazed that this weighs less than my front BUIS.

    Runs flawlessly at gas block setting 7 from closed. My setup for reference: 11.5" mid-length barrel, surefire Socom 556 muzzle brake, Fail-Zero M16 bcg, standard spring, and 3oz CAR buffer.

1 Review

  • Earl - Mar 16th 2016

    5

    This may not be the cheapest but you get what you pay for On my 11.5" mid-length barrel, the adjustment nut is flush with the front of my 10.5" rail, so access for adjustment is easy. I used SLR's .625 dimpling jig to dimple my barrel. White the set screws seemed solid enough, I wanted to pin the gas block for added security. On the right side of the gas block is a flat and a starter hole to make this painless. I used a 1/8" cobalt bit and a drill press to cleanly get through the QPQ finish. I'm amazed that this weighs less than my front BUIS.

    Runs flawlessly at gas block setting 7 from closed. My setup for reference: 11.5" mid-length barrel, surefire Socom 556 muzzle brake, Fail-Zero M16 bcg, standard spring, and 3oz CAR buffer.

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