JP Enterprises Oversized Anti-Walk Hammer & Trigger Pins for AR-15 - 2 Pack
- Firearm Group:
- AR Platform
AR-15 hammer and trigger pins can walk out of your lower receiver during shooting, throwing off your trigger function or causing it to fail entirely mid-string. The JP Enterprises Oversized Anti-Walk Hammer & Trigger Pins solve that problem with a larger diameter design that locks everything in place. This 2-pack gives you the oversized pins you need to replace both your hammer and trigger pins, plus four button-head screws for a clean, flush appearance and simpler takedown and assembly when you need to service your lower.
The oversized .156 diameter pins are finished in black oxide for durability and a professional look. Because they're larger than standard pins, you'll need to ream out your hammer and trigger pin holes with a carbide reamer—a straightforward process that takes a few minutes if you have access to a reaming tool. The good news: no modification to the lower receiver itself is required. Once reamed, these pins will hold solid through thousands of rounds and repeated disassembly cycles.
If you're building an AR-15 from a kit, upgrading a milspec trigger, or just tired of your pins creeping loose, these anti-walk pins are a cheap insurance policy against a frustrating failure. They fit standard AR-15 lowers and work with any trigger and hammer set that uses the same pin diameter once reamed.
Key Features
- Oversized .156 diameter design prevents hammer and trigger pin migration
- 2-pack includes both hammer and trigger pins
- Four button-head screws included for clean appearance and easier service
- Black oxide finish resists corrosion
- No lower receiver modification needed
Specifications
| Pin Diameter | .156 inches (oversized) |
| Quantity | 2 pins |
| Included Hardware | 4 button-head screws |
| Finish | Black oxide |
| Compatibility | AR-15 (requires carbide reaming of pin holes) |
Frequently Asked Questions
Do these pins work with any AR-15 lower receiver?
Yes, they fit standard AR-15 lowers, but because they're oversized, you'll need to ream out the hammer and trigger pin holes with a carbide reamer to size. No changes to the lower receiver itself are needed.
What do the button-head screws do?
The four included screws provide an optional way to secure the pins after installation, creating a flush, clean appearance and making disassembly easier if you ever need to remove your trigger or hammer.
Will these stop my pins from walking out during shooting?
Yes. The oversized diameter locks the pins in place much more securely than standard pins, preventing the creep and drift that causes pins to back out during firing and dry-fire cycles.
Do I need special tools to install these?
You'll need a carbide reamer to enlarge the pin holes in your hammer and trigger to accommodate the .156 diameter. Once reamed, installation is the same as any other pin.

