- 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)
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.
All orders are shipped from our Warehouse in Orange County, CA via the United States Postal Service. Depending on your distance from California, your package delivery date can vary. Standard Shipping will arrive in 3-10 business days. Expedited shipping will arrive in 1-3 business days. Our shipping rates are:
- For orders between 0–$49.99: Standard - $4.99 | Expedited - $8.99
- For orders between $50–$149.99: Standard - FREE | Expedited - $8.99
- For orders $149.99 and up: Standard - FREE | Expedited - $14.99
Next Day Air Shipping is not available. We are not responsible for delays caused by USPS & UPS or for abnormal weather. Shipping fees are non-refundable. Orders placed before 10am PST, Monday-Friday will be shipped same day. Orders placed after 10am or on the weekends/holidays will be shipped on the next general workday. Upon shipment, you will receive an email confirmation with tracking information. If there is an issue with a missing package, please contact your local post office to open an investigation and then contact our customer support staff for help.
The Monstrum Tactical 30 Day Satisfaction Guarantee:
Monstrum Tactical stands behind each of our products with a 30-day no questions asked return policy. Return items must be returned in unused condition with all original parts and packaging. The customer is responsible for shipping. Contact our customer service department to begin the process.