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KNS Precision built this .250 diameter takedown pin to solve two problems at once: fumbling for a punch every time you want to separate your upper and lower, and the slow wear that standard ball-detent pins put on your receiver holes over time. Push the spring-loaded button and the stainless steel keeper pins retract, letting you pull the pin free with nothing but finger pressure. Let go and it locks right back in with a positive hold.
Most factory takedown pins ride on a spring-loaded detent ball, which slowly eggs out the hole in your lower receiver and can lead to a sloppy fit or retention problems down the road. This pin uses a keeper system instead, so it puts far less wear on the receiver every time you take the rifle apart for cleaning. Over the life of a build that gets broken down often, that adds up to a longer-lasting lower and a tighter fit.
The Enhanced tag here isn't marketing fluff. This version got an end cap that makes the pin easier to grab and index during install and removal, and it seals the internals off from dirt, dust, and grit so the mechanism keeps working smoothly. The button also has a drilled cross hole, so you can run a seal wire through it if you want to lock things down and keep the internals tamper-free.
Machined from steel with a black oxide finish, it matches up nicely with black receivers and resists corrosion. It drops into standard AR-15 and M16 lower receivers as a direct replacement for the rear factory takedown pin, no permanent modification needed. KNS Precision makes these in Fredericksburg, Texas. Worth noting this is the takedown pin only and does not include a matching pivot pin, so if you want the set for both ends you'll want to grab the pivot pin separately.
No, this listing is for the rear takedown pin only. If you want the push button setup on both ends of your lower, you'll need to add the KNS pivot pin separately. Many builders run both for a fully tool-free takedown.
It's designed as a direct replacement for the standard rear factory takedown pin on AR-15 and M16 lowers, so it drops in without any permanent modification. Standard mil-spec lowers use a .250 diameter takedown pin, which is what this is built to. If your lower is a small-pin or non-standard receiver, double check your pin size before ordering.
A factory pin rides on a spring-loaded detent ball that slowly wears the receiver hole every time you take the rifle apart. This pin uses retracting stainless steel keepers instead, so it puts less wear on your lower and extends its service life. It also lets you break the rifle down with just finger pressure, no punch or tool required.
The button has a small drilled hole that lets you run a seal wire through it. That gives you a way to lock the pin and keep the internals from being tampered with, which is handy for armory or duty use. For most builds it's a nice-to-have feature you can simply ignore if you don't need it.
| UPC | 851876003332 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | PBTD250-EN |
| Color | AR-15 TAKE DOWN PIN |
| Length | 5.2000 |
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