Receivers

Chesterfield Armament offers rifle and pistol receivers, barreled actions or incomplete firearms that can be utilized into custom or restoration projects. We are always looking to acquire collections of any size.

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  • Aero Precision - M4E1 No Forward Assist Assembled Upper Receiver - 16" Barrel - .223/5.56
    This complete upper receiver features the same tried-and-true construction and aesthetics as our M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard mounting platform with the upper receiver itself. Th..
    This complete upper receiver features the same tried-and-true const...
    $469.00
  • Aero Precision M4E1 Assembled AR 15 Upper Receiver 5.56x45mm Mid-Length 16"
    Aero Precision M4E1 Assembled AR 15 Upper Receiver 5.56x45mm Mid-Length 16" Mid Length Barrel EM-15 Gen 2 M-LOK Handguard Anodized Black APAR640251M7 Aero Precision assembled anodized black upper receiver from 7075-T6 forged aluminum. Includes a mid-length gas system, an EM-15 handguard with con..
    Aero Precision M4E1 Assembled AR 15 Upper Receiver 5.56x45mm Mid-Le...
    $469.00
  • Aero Precision M4E1 Barreled Upper, 16" 5.56 Mid-Length Barrel, 15" M-LOK ATLAS S-ONE
    Aero Precision M4E1 Barreled Upper, 16" 5.56 Mid-Length Barrel, 15" M-LOK ATLAS S-ONE This assembled upper includes the ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero's proprietary ATLAS..
    Aero Precision M4E1 Barreled Upper, 16" 5.56 Mid-Length Barrel, 15"...
    $480.00
  • AR15 M4E1 Enhanced Upper Receiver - Anodized Black
    AR15 M4E1 Enhanced Upper Receiver - Anodized Black APAR600201AC State of the art M4E1 platform starts here, with the M4E1 Upper Receiver. The M4E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Through superior engineering, we have condensed..
    AR15 M4E1 Enhanced Upper Receiver - Anodized Black APAR600201AC ...
    $169.95
  • M4E1 Assembled Threaded Upper Receiver, Special Edition: Thunder Ranch - FDE Cerakote
    M4E1 Assembled Threaded Upper Receiver, Special Edition: Thunder Ranch - FDE Cerakote APAR700219AC The Thunder Ranch product line is a joint venture between Aero Precision and Thunder Ranch. Aimed to achieve Clint Smith's ideal purpose built "Ultimate Carbine", these products include key feature..
    M4E1 Assembled Threaded Upper Receiver, Special Edition: Thunder Ra...
    $159.95
  • M4E1 Threaded Complete Upper, 16" .223 Wylde SS Mid-Length Barrel
    M4E1 Threaded Complete Upper, 16" .223 Wylde SS Mid-Length Barrel, 15" M-LOK ATLAS S-ONE Handguard - Anodized Black APAR700305M9 This complete upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to you..
    M4E1 Threaded Complete Upper, 16" .223 Wylde SS Mid-Length Barrel, ...
    $505.00
  • M5 (.308) Complete Lower Receiver, Standard - Anodized Black
    M5 (.308) Complete Lower Receiver, Standard - Anodized Black Features: Works with standard AR 308 components and magazines Rear takedown pin detent hole is threaded for a 4-40 set screw Bolt catch is threaded for a screw pin (no roll pin needed) Integrated trigger guard Selector mar..
    M5 (.308) Complete Lower Receiver, Standard - Anodized Black Fea...
    $359.95