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Questions & Answers
Will this fit a Battle Arms Development Workhorse lower receiver? Expert Answer

The Aero Precision M4E1 Threaded Bolt Catch Pin is designed to work with the Aero M4E1 Lower Receiver. There is no guarantee for compatibility with your Battle Arms Development Lower.

by Ethan, Gear Expert, August 29, 2022
Customer Reviews
Most Recent Reviews
Easy, No Punch, No Scratch! by Ugly Driver, Verified Owner, October 22, 2025
So much easier! If only I had known, I'd have bought uppers that used this instead of the others.
Most Recent Reviews
It works so far by Khill951, Verified Owner, February 9, 2025
It worked with my Spikes Tactical Rare Crusader lower receiver. It went it easily and tightened up, so I believe the thread pitch was correct.. The pin was a little long, so I just ground it down about a 1/16”.
Most Recent Reviews
M4E1 Threaded Bolt Catch by johnchip, Verified Owner, January 21, 2025
I bought the Awro Precision M4E1 Threaded Bolt Catch because I have a few M4E1 lowers and I think it is always a good idea to have extra parts for them. I stripped one by accident and having an extra in my spare parts box was a life saver.
Most Recent Reviews
billet receiver by Brandon Watson, Verified Owner, December 2, 2024
I wasn't aware that billet lowers require a different parts kit because of the threaded bolt catch pin ! This is a perfect fit !
Most Recent Reviews
Threaded Bolt Catch by Brendan Carlos, Verified Owner, October 30, 2024
Okay so this is a strange one. I'm not a huge fan of the threaded bolt catch. I had it walk out on me. I think the OG roll pin was more secure. That being said add some blue or red lock tight depending on your confidence and it'll never walk out. Pro...
Read More...
Most Recent Reviews
Replacment pins by Odus B, Verified Owner, April 4, 2024
Works perfectly in M4E1 & M5 Aero precision lowers.
Read All 6 Reviews

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Blazin' Deal
Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
Condition: New Color: Black Quantity: 1

Code: 29D-RCP-AEM4TBC-APRH100597C

MPN: APRH100597C

UPC: 840014607204

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$4.49

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Product Info for Aero Precision M4E1 Threaded Bolt Catch Pin

This threaded roll pin is designed to work with our M4E1 Lower Receiver. It will not work with our M5 Lower Receiver or AR-15 Gen 2 Lower Receivers.image

Specifications for Aero Precision M4E1 Threaded Bolt Catch Pin:

Manufacturer: Aero Precision
Condition: New
Color: Black
Quantity: 1
Model: M4E1
Country of Origin: USA

Package Contents:

  • Aero Precision M4E1 Threaded Bolt Catch Pin

Aero Precision M4E1 Threaded Bolt Catch Pin Orderable Models

List of Orderable Models

  • Aero Precision M4E1 Threaded Bolt Catch Pin, Black, APRH100597C , MPN: APRH100597C , UPC: 840014607204 , Code: 29D-RCP-AEM4TBC-APRH100597C

Aero Precision M4E1 Threaded Bolt Catch Pin Unavailable & Discontinued Models

List of Unorderable Models

  • USED Aero Precision M4E1 Threaded Bolt Catch Pin, Black, APRH100597C, EDEMO1, Used, Condition Like New, Inspect and Rebox , MPN: APRH100597C-EDEMO1 , Code: 29D-RCP-AEM4TBC-APRH100597C-EDEMO-RE-A
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