The AR15A4 Hinge Cover Pin (Part #160302010) is a small but essential component designed to keep your AR-15 dust cover (ejection port cover) properly installed, aligned, and functioning reliably. If you’re assembling an AR15A4-style upper, replacing worn parts, or simply stocking spares for your workbench, this hinge cover pin is exactly the part you need to secure your ejection port cover and help protect your rifle’s internals from dirt and debris.
Perfect for home builders, armorers, and shooters who demand reliability from every part of their rifle, the AR15A4 Hinge Cover Pin 160302010 offers a simple, dependable solution in a compact, easy-to-install package.
Purpose-Built for AR15A4 Dust/Ejection Port Covers
The AR-15 platform is known for modularity, and the dust cover assembly is one of those critical yet often overlooked parts. This AR15A4 hinge cover pin is specifically designed to:
Secure the dust cover door to the upper receiver
Provide a smooth pivot point for the door to open and close
Help keep dirt, sand, and debris out of the action when the rifle is not firing
Whether you’re building a classic AR15A4 clone or maintaining a duty or range rifle, a proper hinge pin ensures that your ejection port cover opens and closes correctly, enhancing the reliability of your firearm in the field, on the range, or in storage.
Durable Construction for Long-Term Use
Small parts take a lot of abuse over time, especially on rifles that see regular use. The AR15A4 Hinge Cover Pin 160302010 is built to support:
Long-term durability under repeated opening/closing cycles
Secure retention when properly installed with the corresponding spring and clip
Consistent function in varying weather and environmental conditions
Made to meet AR-spec dimensions, this pin is designed to fit standard AR15A4 upper receivers and compatible dust cover assemblies, giving you confidence that your build or repair will be rock-solid and reliable.
Smooth Operation for Reliable Ejection Port Function
When your rifle cycles, the dust cover snaps open and stays open until you close it again. The hinge cover pin is the pivot point that makes this motion possible. A properly sized and installed pin helps ensure:
Smooth opening when the rifle is fired
Clean, positive motion with the dust cover spring
Proper alignment of the dust cover door with the receiver
If your dust cover hangs, binds, or fails to open cleanly, replacing the hinge pin during a maintenance session is a smart step toward restoring factory-like function.
Ideal for Builders, Armorers, and Maintenance Kits
The AR15A4 Hinge Cover Pin 160302010 is a must-have part for:
AR-15 home builders putting together a new upper receiver
Gunsmiths and armorers servicing AR-platform rifles regularly
Prepared shooters who like to keep spare small parts in a range or armorer’s kit
Because hinge pins are inexpensive and easy to misplace, it’s smart to keep one or more in your parts box. When you’re installing or swapping dust covers, you’ll be glad you have a dedicated AR15A4 hinge pin on hand.
Perfect for AR15A4-Style Clones and Mil-Spec Builds
If you’re building a rifle to match the classic AR15A4 configuration, small details matter:
Correct dust cover hardware
Proper fit with mil-spec style upper receivers
Reliable function that mimics the original design
The AR15A4 Hinge Cover Pin helps you stay true to the traditional configuration while ensuring that your dust cover assembly performs the way it should.
Simple, Straightforward Installation
Installing the AR15A4 hinge cover pin is typically a straightforward process when following safe firearm handling practices:
Prepare the upper receiver and dust cover door.
Position the dust cover, spring, and rod in alignment with the receiver.
Carefully slide the hinge pin through the receiver’s lug, dust cover, and spring as required.
Ensure the spring is properly tensioned so the cover snaps closed and opens correctly.
Verify that the dust cover opens freely when the rifle cycles and closes securely by hand.
Because the hinge pin is a direct-fit part, it’s easy to install during new builds or when servicing your rifle.
Great for Upgrades and Restorations
Whether you’re refurbishing an older AR-15 upper or upgrading components, a brand-new hinge cover pin helps:
Replace worn, bent, or lost pins
Tighten up loose dust cover assemblies
Restore the proper look and function of classic-style uppers
It’s a small investment that can make a big difference in the overall condition and reliability of your rifle.
Key Details – AR15A4 Hinge Cover Pin 160302010
Part Name: AR15A4 Hinge Cover Pin
Part Number: 160302010
Intended Use: Dust/ejection port cover hinge pin for AR15A4-style upper receivers
Function: Secures and pivots the dust cover door
Platform: AR-15 / AR15A4 compatible
These simple specs make it easy to match this pin with your AR15A4 dust cover assembly when ordering or organizing your parts inventory.
An Essential Small Part for AR-15 Reliability
While it’s easy to focus on barrels, triggers, and optics, the hinge cover pin plays an important role in day-to-day reliability:
Helps keep debris out of your rifle’s action when closed
Supports clean operation of the dust cover as the rifle cycles
Contributes to the overall professional fit and finish of your build
For anyone serious about their AR15A4 rifle, having the correct, properly installed hinge cover pin is part of building and maintaining a dependable firearm.
Responsible Installation and Use
As with any firearm part, the AR15A4 Hinge Cover Pin 160302010 should be installed and used safely:
Always ensure the firearm is unloaded and safe before performing any work.
Follow all manufacturer instructions or consult a qualified gunsmith if you’re unsure.
Inspect the dust cover assembly and hinge pin periodically for wear or damage.
A few minutes of careful installation and inspection go a long way toward maintaining a reliable, clean-running AR platform.
If you’re looking for a reliable, AR-spec ejection port hinge pin for your build or repair project, the AR15A4 Hinge Cover Pin 160302010 is the ideal small part to finish the job right—perfect for AR15A4-style uppers, replacement dust cover hardware, and well-stocked parts kits.
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