5.56Mm Assembled Upper Rcvr No Auto Sear Cut For Ar-15 Black

The Aero Precision 5.56 assembled upper receiver with no auto sear cut is built for shooters in jurisdictions where standard AR-15 uppers aren't legal to own. This fully assembled upper comes ready to pair with a compatible lower receiver, giving you a complete, regulation-compliant rifle without the legal complications that can come with certain component configurations. Forged from 7075-T6 aluminum and finished in black, it delivers the durability and precision Aero is known for while meeting the specific requirements of European and other restricted markets.

This upper is chambered in 5.56 NATO and built to the same performance standards as any Aero upper you'd run downrange. You get M4-style feedramps for reliable feeding, an ejection-port cover to keep debris out, and a forward assist for manual bolt closure if needed. The takedown pin holes are machined to .250-inch spec, ensuring a solid, repeatable fit with your lower receiver. Best of all, it ships completely assembled—no gunsmith work required.

Whether you're building a rifle in a region with strict component restrictions or you simply need a no-compromise upper that checks all the boxes legally, this Aero upper delivers the fit, finish, and function that serious AR builders expect. Pair it with a compliant lower and you're ready to shoot.

Key Features

• Fully assembled and ready to install on a compatible lower receiver
• Chambered in 5.56 NATO with M4-style feedramps
• Forged 7075-T6 aluminum construction for strength and durability
• Includes ejection-port cover and forward assist
• Machined .250-inch takedown pin holes for precise fit
• Black finish

Specifications

Frequently Asked Questions

What lower receiver does this upper work with?

This upper receiver is compatible with standard AR-15 lower receivers. Verify that your lower is designed for 5.56 NATO and is compliant with your local laws before pairing.

Is this upper completely assembled?

Yes. This upper arrives fully assembled and ready to attach to a lower receiver. No additional assembly or gunsmithing is required.

Why would I need an upper with no auto sear cut?

Some jurisdictions, particularly in Europe, restrict ownership of components designed to work with certain internal mechanisms. This upper meets those legal requirements while maintaining full 5.56 NATO functionality and reliability.

What finish options are available?

This model is available in black. Aero Precision also produces similar uppers in flat dark earth, but this specific listing is for the black version.