Ergo .750 Low Profile Gas Block

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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 handguards. Melonite QPQ finish for durability, and machined from 4140 chromoly steel with chamfered edges, featuring a slip on fit for ease of installation and secured with two set screws.
CNC machined 4140 chromoly steel

Nitride/Melonite QPQ finish

Chamfered edge, slip on fit

USA made steel & machined in the USA

Weighs 2oz

Fits under most free float handguards

Internal Diameter 0.750

Includes (2) set screws for a secure attachment

Accepts standard gas tube roll-pins (roll‑pin NOT included)

In stock

Product Description

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 handguards. Melonite QPQ finish for durability, and machined from 4140 chromoly steel with chamfered edges, featuring a slip on fit for ease of installation and secured with two set screws.

CNC machined 4140 chromoly steel

Nitride/Melonite QPQ finish

Chamfered edge, slip on fit

USA made steel & machined in the USA

Weighs 2oz

Fits under most free float handguards

Internal Diameter 0.750

Includes (2) set screws for a secure attachment

Accepts standard gas tube roll-pins (roll‑pin NOT included)

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