Riflespeed Adjustable Gas Block - .875" Diameter

Riflespeed Adjustable Gas Block — .875" Diameter

A user-adjustable rifle gas block designed to let the operator set gas flow without tools. The Riflespeed Adjustable Gas Block (.875" journal) uses a numbered control knob with tactile click detents and interchangeable plunger lengths so the gas system can be tuned for different ammunition types, suppressor use, or environmental conditions.

This adjustable gas block provides tool-free adjustment using a knurled control knob with visible, numbered positions for repeatable settings. The modular plunger system accommodates a range of cartridge pressures and the unit includes a rotation-stop feature to reduce the chance of accidental disassembly. The design is intended for use with straight gas tubes; Riflespeed-brand straight gas tubes or equivalent straight gas tubes are required for correct operation.

Key features

• Tool-free, indexed adjustment with tactile “click” detents
• Numbered control knob for repeatable settings
• Modular plunger system (multiple plunger lengths available)
• Rotation-stop to reduce accidental disassembly
• Designed for installation under extended handguards (multiple length options)
• No exposed threaded surfaces in the gas path
• Intended for use with straight gas tubes only

Compatibility

• Journal diameter: 0.875"
• Common cartridges supported: .223 Remington / 5.56×45mm, 300 AAC Blackout, .308 Winchester / 7.62 NATO, 6.8 SPC, 6.5 Grendel, and other cartridges when properly configured with the correct plunger

Notes and installation

• Requires a straight gas tube (Riflespeed or equivalent) for proper alignment and operation.
• Follow manufacturer instructions for plunger selection and torque specifications during installation.
• Ensure compatibility with barrel journal diameter before purchase.