JP Adjustable Gas Block with Locking Screw - .750 Bore

A JP Adjustable Gas Block with Locking Screw in .750 bore is a precision tuning tool for builders who want to dial in their AR's gas system without fighting with loose adjustments or lost parts. Built by JP Enterprises and made from 416 stainless steel, this compact gas block uses a click-detent system to lock your gas screw in place once you've found the sweet spot. Whether you're running a suppressed build, a heavy barrel, or just want to reduce bolt carrier velocity for softer shooting, this block lets you meter gas flow with repeatability—and actually keeps your setting where you put it.

The .750 bore size and minimized profile fit under most modern handguards on the market, and the two-piece split yoke design makes installation straightforward even on barrels already dressed with pinned-and-welded muzzle devices. Side-mounted adjustment means you won't fumble reaching under a rail, and the click-adjustable system gives you six clicks per full rotation for fine-tuning in small increments. All internal detent components stay put—no springs or pins to chase across your workbench.

Assembly is hassle-free: JP includes the 6-32 socket head screws (T15 Torx), the roll pin for gas tube installation, and the 8-32 adjustment screw with hex key. This is American-made, parkerized steel, and weighs just 2.37 ounces, so it won't tip the scale on a lightweight build.

Key Features

• Click-adjustable detent system locks gas screw in place with secure, repeatable settings
• Six clicks per rotation for precise gas tuning adjustments
• Split yoke design enables installation on pin-and-weld muzzle devices
• Side-mounted gas adjustment for easy, intuitive access
• Internally retained detent components—no loose parts to lose
• Compact .750 bore profile fits under most modern handguards
• American-made 416 stainless steel construction
• All mounting screws and adjustment tool included

Specifications

Frequently Asked Questions

Will this gas block fit my AR build with a pinned-and-welded muzzle device?

Yes. The split yoke design is specifically engineered to install even on barrels that already have pin-and-weld muzzle treatments, making it ideal for builds where the front end is already locked down.

Does the gas adjustment screw stay locked in place once I dial it in?

Yes. The click-adjustable detent system secures the gas screw once you've set it, and all internal detent components are retained—you won't lose your setting or have parts fall out.

What size bore does this block fit?

This is a .750 bore gas block. Confirm your barrel's gas port size before ordering to ensure proper fit.

What's included in the package?

The package includes the gas block, six 6-32 x 3/8" socket head screws with T15 Torx drive, the 8-32 adjustment screw with 5/64" hex key, and a 5/64" x 5/16" roll pin for gas tube installation.