Description
Takedown pins might be the last thing you think about on an AR build, but they get handled every time you strip the rifle, and a good set makes life easier. The Radian Weapons AR-15 Takedown Pin Set is machined from high-strength steel and coated in black nitride, giving you a slick, low-friction surface that shrugs off wear and corrosion through repeated field stripping. It's a subtle upgrade that pulls its weight far beyond its size.
What Sets the Radian Takedown Pin Set Apart
The real standout here is the captured detent design. The detent stays attached to its spring, so during installation you're not launching a tiny part across the room or crawling around the floor hunting for it. Anyone who has done an AR build the traditional way knows exactly how much of a headache that little spring and detent can be. Radian solved it cleanly, and it's the feature owners bring up most often.
Built-In Details That Make Field Stripping Easier
Both pins are thought out for real use. The forward pivot pin has a fingernail groove machined around the head so you can grab and pull it without a tool, while the rear takedown pin features a dimpled end that gives a cartridge tip or punch a spot to push against without slipping. The pins carry the engraved Radian logo on the face, and the black nitride finish tends to match anodized lowers nicely for a build that looks as dialed in as it runs.
Fit and Compatibility
This set is built to Mil-Spec .250-inch dimensions and drops into standard AR-15 and M16 receivers. As with any tighter-tolerance aftermarket pins, fit can vary slightly depending on your specific lower and upper combination, so a snug fit on a fresh install is normal and usually beds in with use. The whole kit comes complete with both pins, detents, and springs, so you've got everything needed to finish the job in one box.
Key Specifications
- Manufacturer: Radian Weapons
- Manufacturer Part Number: R0077
- Model: Take Down Pin Set
- UPC: 817093020767
- Material: Steel
- Finish: Black Nitride
- Pin Dimension: Mil-Spec .250"
- Fit: AR-15 / M16 receivers
- Detent Style: Captured detents (attached to springs)
- Country of Origin: USA
- Product Type: Accessory / Parts
What’s Included
- 1x Radian Weapons AR-15 Pivot Pin
- 1x Radian Weapons AR-15 Takedown Pin
- 2x Detents
- 2x Detent Springs
Frequently Asked Questions
Will the Radian takedown pin set fit my AR-15?
Yes, this set is machined to Mil-Spec .250-inch dimensions and is designed for standard AR-15 and M16 receivers. Tolerances can run slightly tight depending on your particular lower and upper, so a snug initial fit is common and typically works in with use. If you're running a mixed-brand build, expect it to seat right in the vast majority of cases.
What makes the captured detent design worth it?
The detent stays attached to its spring as one piece, which means far fewer small parts to lose during installation. Traditional detents and springs love to launch across the room, and this design eliminates that frustration. Owners consistently call it out as the best part of the kit.
Do I need special tools to install these pins?
No special tools are required for the install itself, and many people set them in by hand. The dimpled end on the takedown pin gives a punch or cartridge tip a spot to push against during disassembly if you want extra leverage. A basic punch set is always handy to have around for AR work, but it isn't a must for this kit.
Does the black nitride finish hold up over time?
Black nitride is a hard, low-friction surface treatment that resists wear and corrosion well through repeated field stripping. It keeps the pins looking clean while cutting down friction for smoother operation under higher round counts. The finish also tends to blend nicely with anodized black lowers.






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