Image unavailable
Ar-15 M4e1/M5 Threaded Receiver Roll Pin - Threaded Receiver Roll Pin For Ar-15 M4e1/M5 Stainless Steel
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$8.99
View on Brownells
You'll be taken to Brownells to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: 100036980
Overview
Aero Precision’s threaded roll pin is a replacement part intended for specific receiver applications, including the bolt catch on M5 lower receivers and the forward assist on upper receivers. It is made from stainless steel and uses a 6-32 thread pitch, with installation designed around a 1/16" hex key wrench. This part is already included with several Aero Precision enhanced and threaded upper and lower receiver configurations, so it is mainly relevant when an original pin has been lost or damaged. For owners maintaining compatible M4E1 or M5E1 components, it offers a straightforward way to restore the needed hardware without purchasing a full assembly.
Why Hunters Choose the Aero Precision
Stainless Steel
Construction for a durable replacement
6-32 Thread
Pitch specified for compatible Aero
Bolt Catch
Forward assist use on listed
Installs 1/16-inch
A 1/16-inch hex key wrench
Useful As
Replacement if the original threaded
Key Features
- Aero Precision threaded roll pin for M4E1/M5 applications
- Used for the bolt catch on M5 lower receivers
- Used for the forward assist on upper receivers
- Stainless steel construction
- 6-32 thread pitch
- Designed for installation with a 1/16" hex key wrench
- Included with select Aero Precision M4E1/M5E1 and M5 receivers; sold separately for replacements
Best Used For
- Replacement option for owners who lost or damaged an existing Aero Precision threaded roll pin
- Suitable for M4E1/M5E1 and M5 receiver maintenance or parts replacement
- For users installing a threaded roll pin with a 1/16-inch hex key wrench
- Useful for bolt catch or forward assist applications on compatible Aero Precision receivers
Specifications
| Applications | Bolt catch on M5 Lower Receivers; forward assist on Upper Receivers |
|---|---|
| Compatible With | M4E1 Enhanced Upper Receivers; M4E1 |
| Included With | M4E1/M5E1 Enhanced Uppers; M4E1 Threaded Uppers; M5 Upper Receiver; M5 Lower Receiver |
| Installation Tool | 1/16" Hex Key Wrench |
| Material | Stainless steel |
| Replacement Use | For customers who have lost or damaged their existing threaded roll pin |
| Thread Pitch | 6-32 |
Pros
- Stainless steel construction for a durable replacement part
- 6-32 thread pitch specified for compatible Aero Precision applications
- Designed for bolt catch and forward assist use on listed receivers
- Installs with a 1/16-inch hex key wrench
- Useful as a replacement if the original threaded roll pin is lost or damaged
- Works with Aero Precision M4E1 Enhanced Upper Receivers
Considerations & Trade-offs
- This is a replacement part, not a required add-on for compatible Aero Precision receivers, since it is already included with several M4E1/M5E1 and M5 components.
- Installation calls for a 1/16" hex key wrench, so it is not a simple drop-in pin for users without the proper tool.
- Compatibility is limited to the listed Aero Precision receiver applications, so it is not a universal threaded roll pin.
- The part is intended for lost or damaged existing pins, which makes it a niche spare rather than a general-purpose upgrade.
Suggested Comparisons
- AR-15 upper receiver parts
- AR-15 lower receiver parts
- Small firearm assembly hardware
- Replacement receiver pins and fasteners
Suggested Accessories
- Hex key wrench
- AR-15 lower receiver parts
- Upper receiver parts
- Replacement roll pins
Frequently Asked Questions
What is this threaded roll pin used for?
Aero Precision says it is used in multiple applications, including the bolt catch on M5 Lower Receivers and the forward assist on Upper Receivers.
Is this part already included with Aero Precision receivers?
Yes. The description says it is already included with M4E1/M5E1 Enhanced Uppers, M4E1 Threaded Uppers, M5 Upper Receiver, and the M5 Lower Receiver, so it is not necessary to buy separately unless you need a replacement.
What material is the threaded roll pin made from?
It is made from stainless steel.
What thread pitch does it use?
The listed thread pitch is 6-32.
What tool is needed to install it?
It is designed to be installed with a 1/16 inch Hex Key Wrench.