Double Star Ar-15 Hbar Front Sight Housing Black

The Double Star AR-15 HBAR front sight housing is a forged steel replacement designed for builders and shooters who want to restore or upgrade an AR platform rifle to authentic military specifications. Built from C1137 steel and heat-treated for durability, this housing accepts standard A1- or A2-type front sight posts, springs, and detents—giving you flexibility to match your preferred sight configuration. It's machined to mil-spec tolerances and finished in matte black Parkerized to blend with original mil-spec hardware.

This front sight housing includes a bayonet lug, making it ideal for those working on rifles that fall within the classic M16A2 or M4 profile. The sling swivel rivet hole comes pre-drilled, and the housing is ready for final fitting to your barrel—though you'll need to drill holes for set screws or taper pins during installation to ensure a precise, secure fit. Whether you're restoring a rifle to original configuration or building from a flat-top receiver, this housing provides the foundation for a clean, traditional front end.

Double Star's focus on mil-spec standards means you're getting parts built to the same dimensional and material requirements as military production. The HBAR designation confirms compatibility with both heavy-profile barrels commonly found on M16A2 and M4 variants. This is a core component for anyone serious about correct AR architecture and reliable performance.

Key Features

• Forged C1137 steel with heat treatment for superior strength
• Accepts A1- or A2-type front sight posts, springs, and detents
• Includes bayonet lug for authentic military appearance
• Pre-drilled sling swivel rivet hole
• Matte black Parkerized finish matches standard mil-spec hardware
• Machined to military specifications
• Compatible with M16A2 and M4 heavy-contour barrels

Specifications

Frequently Asked Questions

Will this front sight housing fit my AR-15?

The Double Star HBAR housing is compatible with M16A2 and M4 heavy-contour barrels. Verify your barrel profile before purchasing. Installation requires drilling holes for set screws or taper pins for a precise fit to your specific rifle.

What sight posts can I use with this housing?

This housing accepts standard A1- or A2-type front sight posts, springs, and detents. You can choose the specific sight configuration that best suits your rifle and shooting style.

Does this include a bayonet?

The housing includes a bayonet lug for attachment of a bayonet, but the bayonet itself is not included. You'll need to source a compatible bayonet separately if desired.

What finish does it have?

The housing features a matte black Parkerized finish, which is the standard mil-spec finish used on military rifles and matches original AR-15 hardware.