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.
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...
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...
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 Complete Lower Receiver with MOE SL Grip and SL Carbine Stock
APAR600116
The M4E1 Complete Lower Receiver is the perfect base for your custom AR15 build. This complete lower features Aero Precision's custom-designed M4E1 Lower Receiver and is upgraded to include a Mag..
Aero Precision M4E1 Complete Lower Receiver with MOE SL Grip and SL...
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
...
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...
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..
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...