CMMG AR-15 Front Sight Base Assembly — F-Marked .750 in

The CMMG AR-15 Front Sight Base Assembly is an F-marked front sight and gas block designed for AR-15 barrels with a .750 inch gas journal. It includes a front sight post and a sling loop and is finished in black matte. Constructed from steel, this component serves as a replacement part or for new rifle builds. Installation requires specific equipment and should be completed by a licensed gunsmith.

Key Specifications

• The assembly fits barrels with a gas journal diameter of .750 inch and approximately 2 inches of journal length.
• Constructed from steel for structural durability.
• The finish is a black matte coating.
• Includes a front sight post and a sling loop as shipped.
• This product does not include taper pins; taper pins are required for installation.
• Product type is listed as a front sight base / gas block.
• Overall dimensions are 1.75 x 3.75 x 8.70 inches.
• The documented height is 1.7500 inches.
• The documented width is 3.7500 inches.
• The documented length is 8.7000 inches.

Whether restoring an AR-15 or completing a custom build, this CMMG front sight base provides an OEM-style fit and durable construction. Its straightforward design and included sight post and sling loop make it a practical choice for builders and armorers seeking a reliable, serviceable front sight assembly.