Free ground shipping on every contiguous U.S. order · Ships within 1 business day after payment/verification · Upgraded shipping processed same business day when ordered by 9:30 AM ET
Constructed from 7075 T6 aluminum for durability and strength
Includes port door and forward assist preinstalled
Features M4 feed ramps for reliable feeding performance
Olive drab green finish enhances corrosion resistance and durability
Product description
The Aero Precision M4E1 Assembled Upper Receiver is an AR-15 upper receiver designed for building or upgrading AR-15 rifles. The Aero Precision M4E1 Assembled Upper Receiver features M4 feed ramps, .250 takedown pin holes, and a Picatinny rail profile for standard AR-15 configurations.
This AR-15 upper receiver is manufactured by Aero Precision from 7075-T6 aluminum with an anodized olive drab green finish and includes a port door and forward assist pre-installed. The Aero Precision M4E1 Assembled Upper Receiver uses an enhanced forging design with laser engraved T-marks and is compatible with standard AR-15 components. In typical setups, this upper receiver interfaces with mil-spec lower receivers and supports standard parts installation. This product is used for rifle assembly or replacement in AR-15 systems for range use or general firearm configuration tasks.
Volume pricing for business and agency buyers, plus free ground shipping on most continental U.S. orders.
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Bulk discounts
Volume pricing, dedicated account management, ACH payment options, and special sourcing for businesses, agencies, law enforcement, and first responders.