The Ergo Low Profile .750 Gas Block (4821) is designed to fit under the Ergo Modular and SuperLite™ Rail System, as well as most other manufacturers’ free float handguards.

Features:

• CNC machined 4140 Chromoly steel
• Black Nitride/Melonite Quench Polish Quench (QPQ) finish
• Chamfered edge, slip-on fit
• Weighs 2oz
• Fits under most free float handguards
• USA made steel & Machined in the USA
• Internal Diameter 0.750
• Includes (2) set screws for a secure attachment
• Accepts standard gas tube roll-pins (roll‑pin NOT included)