Receiver PartsAero PrecisionSold by Brownells

Aero Precision

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

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Built for shooters who need an AR-15 upper receiver configured without an auto sear cut, this assembled Aero Precision option is intended for single-shot use where that setup is required.

Aero Precision

No auto sear cut

Chambered 5.56

NATO

Includes Ejection-port

Cover and forward assist

M4-style Feedramps

Machined .250-inch

.250-inch takedown pin holes

$119.99
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SKU: 100026423

Overview

Built for shooters who need an AR-15 upper receiver configured without an auto sear cut, this assembled Aero Precision option is intended for single-shot use where that setup is required. It is chambered in 5.56 NATO and includes standard upper-receiver features such as an ejection-port cover, forward assist, M4-style feedramps, and .250-inch takedown pin holes. The black finish gives it a straightforward, utilitarian look suited to a practical build. For hunters and range users working within specific legal or configuration requirements, it offers a compliant upper receiver foundation without added complexity.

AI Recommendation

Built for shooters who need an AR-15 upper receiver configured without an auto sear cut, this assembled Aero Precision option is intended for single-shot use where that setup is required.

Why Hunters Choose the Aero Precision

Chambered 5.56

NATO for standard AR-15 compatibility

Includes Ejection-port

Cover and forward assist

M4-style Feedramps

Machined .250-inch

.250-inch takedown pin holes

Single-shot Use

Auto-sear-compatible components are not allowed

Key Features

  • Aero Precision AR-15 upper receiver with no auto sear cut
  • Chambered in 5.56 NATO
  • Includes an ejection-port cover and forward assist
  • Features M4-style feedramps
  • Machined with .250-inch takedown pin holes
  • Ships completely assembled

Best Used For

  • Single-shot AR-15 builds where an upper without auto sear cut is required
  • European owners needing a standard-pattern upper receiver for compliant use
  • Builders wanting a 5.56 NATO upper with ejection-port cover and forward assist
  • Users seeking an assembled upper with M4-style feedramps and .250-inch takedown pin holes

Specifications

AssembledYes
Auto Sear CutNo
Chambering5.56 NATO
ColorBlack
Designed ForSingle-Shot Use
Ejection Port CoverIncluded
FeedrampsM4-style
Forward AssistIncluded
Takedown Pin Holes.250-inch

Pros

  • Chambered in 5.56 NATO for standard AR-15 compatibility.
  • Includes an ejection-port cover and forward assist.
  • Features M4-style feedramps.
  • Machined with .250-inch takedown pin holes.
  • Designed for single-shot use where auto-sear-compatible components are not allowed.

Considerations & Trade-offs

  • Designed for single-shot use, so it is not intended for standard semi-automatic AR-15 configurations.
  • The no auto sear cut is a specific compliance-oriented feature, which may limit compatibility with setups that require a standard upper receiver profile.
  • This is an upper receiver only; it does not include a complete rifle or lower receiver.
  • The product is chambered in 5.56 NATO, so it is limited to that cartridge specification.

Suggested Comparisons

  • AR-15 upper receivers
  • AR-15 lower receivers
  • AR-15 parts and accessories
  • 5.56 NATO rifle components

Suggested Accessories

  • AR-15 lower receiver
  • Ejection-port cover
  • Forward assist
  • Takedown pin set

Frequently Asked Questions

What is this upper receiver intended for?

It is described as designed for single-shot use and for users who are not legally allowed to possess components that function with an installed auto sear in the AR-15 lower.

Is this a complete upper receiver assembly?

The product title and description identify it as an assembled AR-15 upper receiver. The description also notes that it ships completely assembled.

What caliber or chambering is it made for?

The long description states that it is chambered in 5.56 NATO.

Does it include standard AR-15 upper receiver features?

Yes. The description says it matches standard AR-15 upper receiver specifications and includes an ejection-port cover and a forward assist.

What other specifications are listed?

The listed features include M4-style feedramps and .250-inch takedown pin holes. The product is identified as an Aero Precision upper receiver in black.