The Spike’s Tactical Ejection Door Installation Kit Black Metal Rifle AR-15 (SED7900, UPC 815648020316) is a compact hardware kit that includes all the essential components required to install or replace an AR-15 ejection port door (dust cover) on a stripped upper receiver. Designed to work with both standard and Spike’s Tactical laser-engraved port doors, this three-piece kit provides Mil-Spec-compatible parts in a durable black metal finish optimized for AR-15 rifle builds and upgrades. Spike's Tactical+2GrabAGun+2
Model Identification and Platform Compatibility
The kit is engineered for Mil-Spec AR-15 style uppers, making it suitable for most standard right-hand AR-15 receivers that use conventional ejection port door hardware. GrabAGun+2Classic Firearms+2
Components Included in the Kit
The Spike’s SED7900 Ejection Door Installation Kit is a 3-piece hardware set that provides all the key parts needed to mount a dust cover:
These components are the core mechanical elements that secure and actuate an AR-15 ejection port door on the upper receiver. The kit does not include the actual ejection port door panel, which is purchased separately (standard or engraved). Firearms Pulse+3Spike's Tactical+3GrabAGun+3
Material, Finish, and Construction
Product listings and manufacturer specifications describe the kit as:
All pieces are manufactured to Mil-Spec standards, and Spike’s Tactical emphasizes that their parts are built for long-term reliability and are backed by their lifetime warranty through many distributors. Cheaper Than Dirt+1
Functional Role and Use Case
The kit is designed to support:
Initial installation of an ejection port door on a new, stripped upper receiver.
Replacement or refurbishment of worn, damaged, or missing ejection port door hardware.
Customization projects, especially when pairing with Spike’s engraved ejection port doors such as “Punisher and Flag,” “Zombie Killer,” and other themed covers. Firearms Pulse+3GrabAGun+3Classic Firearms+3
Functionally, these components work together to:
Allow the door to snap shut under spring tension, helping keep dust and debris out of the chamber area when the rifle is not firing.
Enable the door to automatically open when the bolt carrier group cycles during firing, just like a standard AR-15 dust cover assembly. Cheaper Than Dirt+2Classic Firearms+2
Installation Overview
The SED7900 kit is intended as a straightforward installation for users familiar with AR-15 assembly:
Prepare the stripped upper receiver and ejection port door (purchased separately).
Insert and clock the spring on the ejection port door to provide proper opening tension.
Align the door with the receiver hinge bosses and slide the ejection port door pin through the hinge and spring.
Secure the assembly by installing the C-clip on the end of the pin to retain it in place. Firearms Pulse+3GrabAGun+3Classic Firearms+3
While detailed assembly procedures can vary slightly, the kit’s components mirror standard AR-15 hardware, making it compatible with most existing installation guides and armorer practices.
Compatibility and Mil-Spec Fit
Key compatibility points:
Because the pin, spring, and C-clip are all built to Mil-Spec pattern, they are generally compatible with a broad range of AR-15 upper receivers from different manufacturers, provided those receivers use conventional ejection port door hardware.
Durability and Maintenance
The Spike’s SED7900 kit is designed for long-term service:
Routine maintenance generally involves:
Wiping down exposed portions of the pin and spring during normal upper receiver cleaning.
Light lubrication where appropriate (following standard AR-15 maintenance practices), especially if the rifle is used in harsh environments.
Because the components are small, careful handling during disassembly and reassembly is recommended to avoid losing the spring or C-clip.
Technical Specifications (Summary)
Spikes Ejection Door Installation Kit Black Metal Rifle AR-15 – SED7900
By combining Mil-Spec steel hardware, a durable black finish, and all three critical components needed to mount a dust cover, the Spikes Ejection Door Installation Kit Black Metal Rifle AR-15 SED7900 offers a compact, reliable solution for completing or refurbishing AR-15 upper receivers with either standard or custom engraved ejection port doors.
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