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JP Adjustable Gas System
Picatinny rail
.750 bore
Black stainless

The JPGS-6 model is our dial-adjustable small bore design intended facilitate easy transitioning between suppressed and unsuppressed fire on large-frame rifles.

Rather than using a continuously adjustable screw like our other gas blocks, the JPGS-6 has three discrete valve openings that are tuned to a particular rifle and ammunition at installation. Some gunsmithing experience is strongly recommended for this component. Read more by clicking the link below to review the instructions.

Note that this gas block comes pre-installed with a specialized gas tube. Select your desired length above.

Compatible with large-frame (.308) receivers only.


  • Barrel Diameter: .750
  • Material: 416 stainless
  • Finish: Black oxide
  • Weight: 7.69 oz.
  • Length: 1.88" (on barrel)
  • Height: 1.56" (overall), 1.31" (over bore)
  • Width: 1.30"
  • Attachment: 6-32 x 1/2" socket head screws, T15 Torx drive (included))
  • Adjustment: Gas valve dial with presets


Product Instructions

Gas Tube:

Price: $279.95