The Sharps Bros Billet Upper Receiver is a stripped AR-15 upper machined from billet 7075-T6 aluminum and compatible with .223/5.56 NATO, .300 Blackout, and 6.5 Grendel builds (brand part no. SBUR04). Sharps Bros ships this receiver with the forward assist kit and dust cover already installed, so you only need to add a barrel, bolt carrier group, and handguard to finish the upper. Precision billet machining keeps tolerances tight for a smooth-running action. It’s a solid foundation for a custom AR-15 build across several popular chamberings.

Key Specifications

• Compatible with .223/5.56 NATO, .300 Blackout, and 6.5 Grendel AR-15 builds.
• Machined from billet 7075-T6 aluminum for a precise, one-piece receiver.
• Forward assist kit ships installed, unlike a slick-side design.
• Dust cover is included and installed.
• Stripped upper receiver, ready for your choice of barrel, bolt carrier group, and handguard.

Frequently Asked Questions

What calibers is this upper receiver compatible with? 223/5.56 NATO, .300 Blackout, and 6.5 Grendel AR-15 builds.

Does it come with the forward assist installed? Yes, the forward assist kit and dust cover both ship installed.

Buy the Sharps Bros Billet AR-15 Upper Receiver

Order this billet upper from our Lubbock, Texas gun shop and start your AR-15 build as soon as it’s available to ship. Browse our full AR15 uppers lineup for more configurations.