Aero Precision M4E1 Lower Bolt Catch Pin

Manufactured by Aero Precision
SKU: APRH100597C
MPN: APRH100597C
Manufactured by Aero Precision
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The AR platform of rifles has become, easily, the most modular and customizable platform on the planet in terms of rifles. Some folks treat theirs like a common tool, preferring rudimentary function over anything else, and not worrying about too much beyond that. On the other hand, some users, in particular competition shooters, go for the best performance possible and are willing to dial in every aspect of the rifle in order to get the most consistent, quickest, and most reliable rifle possible.

If you’re in the latter category of users,  Aero Precision makes a lot of products aimed directly at you. In building an AR, you’ll  probably end up wanting to fine tune the fit of the rifle as much as you possibly can. You’ll also likely make a few mistakes and lose a few parts whether its during building over time. That’s why most serious AR owners have at least a baggie or two of small things we’re likely to loose or break. In that bag should be some of these threaded roll pins.  This is a bolt catch pin  that fits a little better than the standard roll pins. It’s  a stainless steel pin with 6/32 threat and is meant to be installed with a hex wrench. It’s included with many of Aero’s receivers, but it is also a solid idea to have a few on hand just in case. Pick up a few of the Aero Precision M4E1 Lower Bolt Catch Pins for when you lose or break yours.

Aero Precision takes some of the most state-of-the-art manufacturing techniques and equipment derived from their work in the aerospace industry and applies it to their products in the firearms industry. They have utilized their knowledge from years of building aircraft components to design and engineer AR-15 handguards, receiver sets, scope mounts, and more. They treat every product as if it were a precision flying machine and adhere to strict quality standards to ensure law enforcement, military, and civilian customers receive a product they can rely on.

  • Stainless Steel
  • 6/32 thread
  • Hex wrench install 
  • Fits Aero M4E1 lower
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BrandAero Precision
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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