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Sentry 7 Set Screw Adjustable Gas Block - .450"

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SKU:
SA7-450-SM
UPC:
810646034709
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Info

SKU:SA7-450-SM ,UPC:

Info

SKU:
SA7-450-SM
UPC:
810646034709

Description

Sentry .750" Set Screw Version

.450" Set Screw Spacing - Melonite QPQ Finish

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
- Stamped 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 SLR Handguards and most others

INSTRUCTIONS

2 Reviews

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  • G NoVA - Nov 16th 2018

    5

    I purchased this SA7-450-SM gas block after experiencing blown primers and cycling issues in a 16" 5.56mm, mid-length barrel paired with an AR-15 bolt carrier. I judged the barrel gas hole was too large for my original GB7-450 gas block and H1 buffer in combination with the dwell length and BCG. After replacing the fixed gas block with this adjustable and swapping buffers, the carbine cycles flawlessly (with either an H2 or H3 buffer). I've bought a second SA7-450-SM for a 6.5 Grendel upper and will get a third for a 224 Valkyrie upper. The adjustments are excellent, allow for fine tuning and will be a bonus for suppression.

  • Brian - Jul 6th 2017

    5

    Running this block on my 6" 5.56 SBR. The gas block is fantastic and allows the user the adjust for all types of ammo suppressed or unsuppressed. If you have and SBR, I would highly recommend getting this gas block. Hands down the best adjuatable gas block on the market! The customer service is exceptional too!

2 Reviews

  • G NoVA - Nov 16th 2018

    5

    I purchased this SA7-450-SM gas block after experiencing blown primers and cycling issues in a 16" 5.56mm, mid-length barrel paired with an AR-15 bolt carrier. I judged the barrel gas hole was too large for my original GB7-450 gas block and H1 buffer in combination with the dwell length and BCG. After replacing the fixed gas block with this adjustable and swapping buffers, the carbine cycles flawlessly (with either an H2 or H3 buffer). I've bought a second SA7-450-SM for a 6.5 Grendel upper and will get a third for a 224 Valkyrie upper. The adjustments are excellent, allow for fine tuning and will be a bonus for suppression.

  • Brian - Jul 6th 2017

    5

    Running this block on my 6" 5.56 SBR. The gas block is fantastic and allows the user the adjust for all types of ammo suppressed or unsuppressed. If you have and SBR, I would highly recommend getting this gas block. Hands down the best adjuatable gas block on the market! The customer service is exceptional too!

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