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JP JPGS-6: Adjustable Gas Blk w/Step Valve .750 Bore, Stainless w/1913 MIL-STND Rail


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 Product Description

JP Adjustable Gas System 

The JPGS-6 model is our dial-adjustable small bore design intended facilitate easy transitioning between suppressed and unsupressed fire. 

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. 


  • 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

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Mile High Shooting Accessories
3731 Monarch St
Erie, Co 80516
Toll Free: 1.877.871.9990
Phone: 1.303.255.9999
Fax: 1.303.254.6572

Mon-Fri: 10:00AM – 6:00PM
Sat: 9:00AM – 4:00PM
Sun: Closed

No other discounts apply. Call for details. Free shipping on orders over $250 (Excluding firearms, ammo, and reloading supplies), Continental US only.

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