ERGO AR-15 Low Profile Gas Block .750" Black 4821

Ergo Grip
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The Ergo 4821 .750 Low Profile Gas Block is designed to fit under the Ergo Modular and SuperLite Rail System, as well as most other manufacturer's free float AR-15 handguards. Melonite QPQ finish for durability, and machined from 4140 chrome moly steel with chamfered edges, featuring a slip on fit for ease of installation and secured with two set screws.

Features and Specifications:
Manufacturer Number: 4821
CNC machined 4140 Chrome Moly steel
Nitride/Melonite QPQ finish
Chamfered edge, slip on fit
Weighs 2 ounces
Internal Diameter 0.750
Under most free float handguards. Accepts standard gas tube roll-pins (roll pin NOT included)

Two set screws for a secure attachment 

Item#: ARR-875-049