The M4E1 receiver set is expertly designed for those seeking exceptional performance and reliability in their firearm build. This set includes a stripped lower receiver, featuring an integrated trigger guard for increased durability and a seamless user experience. The assembled upper receiver is crafted using an advanced forging process, ensuring superior strength and a sleek, polished finish. Together, these components create a solid foundation for building a high-quality rifle, offering both functionality and visual appeal. Whether you're an experienced builder or new to the process, the M4E1 receiver set combines precision engineering with exceptional craftsmanship for a flawless build.

Threaded takedown pin detent recess - this feature enables users to effortlessly install the takedown pin detent and spring using a 4-40 set screw, effectively preventing the detents from being inadvertently launched across the room
Enhanced magwell flare - the magwell flare has been augmented to facilitate rapid and efficient magazine changes
The newly improved forging process imparts a "billet look" to the upper receiver
The new picatinny profile integrates seamlessly with our enhanced and Atlas series handguards
M4 feed ramps
0.250 inches takedown pin holes
Laser-engraved T-marks
The threaded bolt catch roll pin facilitates straightforward installation of the bolt catch and significantly reduces the risk of damaging the finish during the installation process
The pin is included
The integrated trigger guard design eliminates the risk of breaking the trigger guard tabs by incorporating the trigger guard into the lower receiver
This integration results in a stronger and more rigid platform for further development
The upper tension screw enables precise adjustment of the fit between the upper and lower receivers
This is achieved through a nylon-tipped tensioning set screw inserted into the grip tang of the lower receiver, ensuring a secure fit with any standard AR-15 upper receiver

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