Riflespeed AR-15 Adjustable Gas Block - 4.3" Length - Set Screw - .625"

The Riflespeed Standard AR-15 Adjustable Gas Block gives you tool-free gas control through a numbered dial with tactile clicks, so settings are repeatable even in low light. Built for a .625" gas block journal, this 4.3" assembly uses a modular design with no small springs or exposed screws to lose or break during cleaning or field use.

Features:

• Tool-free numbered dial adjustment with tactile clicks
• Set screw mounting to the barrel
• 4.3" assembly length
• .625" gas block journal
• Modular design (no springs, detents, or exposed screws)
• Patented Rotation Stop prevents accidental disassembly
• Compatible with 5.56 NATO and .300 Blackout
• Steel construction with a corrosion-resistant finish
• Suited to suppressed and unsuppressed setups

The patented Rotation Stop keeps the adjustment knob from backing itself apart under vibration and recoil, addressing a common failure point on other tool-free adjustable designs. Riflespeed tests its gas blocks through tens of thousands of rounds across suppressed and unsuppressed setups, aiming for smoother cycling, reduced recoil, and consistent tuning regardless of ammunition or caliber, so a setting found on the range stays exactly where you left it.

Riflespeed designs tool-free adjustable gas blocks built around a patented Rotation Stop mechanism, engineering parts tested through tens of thousands of rounds for reliability across calibers and suppressor setups.