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Questions & Answers
Is this too much gas block for a AR10 .308 win ?

This is not too much gas block for an AR-10 however there are design flaws that may render it unusable for your application. According to JP Enterprises you will need to purchase a tap, remove all screws then re-tap the gas screw hole with the gas tube inserted. This process may or may not work to make the gas block perform properly depending upon the tolerances your new gas block was machined to. The quality control on this block is poor and JP will not stand behind this product. Just remember- BEFORE YOU PURCHASE- that this gas block will not work under any circumstances on any application without first modifying it with the use of a tap that you must purchase additionally according to JP Enterprises.

by JT, Verified Owner, July 27, 2021
Fits in the follow sauer m400 Tread? Expert Answer

No, this will not work for the Tread.

by Tom B, Gear Expert, October 12, 2021
Customer Reviews
Helpful Negative Review
Purchased on 7/16/21. This .936 adjustable gas block with detent was defective in either design or craftsmanship through the machine process. The gas tube and roll pin holes were machined too low causing a misfit and rendered the gas block unusable. ...
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Product No Longer Available

Unfortunately JP Enterprises .936 Bore Alum. Gas Block with Detent Gas Adjustment is not listed by OpticsPlanet.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, AR Gas Blocks yourself to try and find the perfect replacement for you!

Product Info for JP Enterprises .936 Bore Alum. Gas Block with Detent Gas Adjustment

The JPGS-8D is our minimized large bore design intended to mount underneath many hand guard models on the market. Its two-piece design allows for easier installations even on barrels with pin-and-weld muzzle treatments.image

This model features our new click-adjustable detent system for precise adjustments and secure retention of your gas screw. Never lose you gas setting or screw.

Package includes gas block, attachment hardware, adjustment set screw, detent mechanism hardware (pre-installed), roll pin for gas tube installation, wrenches and instruction sheet.

Installation of this has block requires tapping the adjustment screw hole. We offer a suitable 6-32 bottoming tap if you do not have one ready to hand.

Features:

Sturdy, light-weight billet aluminum construction

Light-weight, minimized profile for mounting under most hand guard models

Click-adjustable detent system for repeatable setup and secure retention of gas setting

Five clicks per rotation of gas screw for finer adjustments

Split yoke design for easy installation even on pin-and-weld barrels

Easy-to-access side gas adjustment

Internally retained detent components means no lost parts

Features of JP Enterprises .936 Bore Alum. Gas Block with Detent Gas Adjustment

  • Material: 6061 T6 aluminum
  • Finish: Black hardcoat anodized
  • Weight: 2.7 oz.
  • Length: 1.88"
  • Height: 1.38" (overall), .77" (over bore)
  • Width: 1.34"
  • Minimum Recommended Tube ID: 1.75"
  • Attachment: 6-32 x 1/2" socket head screws, T15 Torx drive (included)
  • Adjustment: 6-32 x 3/8" stainless set screw, 1/16 hex drive (included)

Package Contents:

  • JP Enterprises .936 Bore Alum. Gas Block with Detent Gas Adjustment

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JP Enterprises .936 Bore Alum. Gas Block with Detent Gas Adjustment Unavailable & Discontinued Models

List of Unorderable Models

  • JP Enterprises .936 Bore Alum. Gas Block with Detent Gas Adjustment, Black, JPGS-8D , MPN: JPGS-8D , UPC: 812872024646 , Code: J5-RGB-JPENT2-JPGS-8D
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Last updated 2026-10-26 UTC.