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Anyone who has built an AR lower knows the takedown and pivot pin detent springs are tiny, cheap, and somehow the easiest parts in the whole rifle to lose. LBE Unlimited fixes that headache by selling them ten at a time. These are standard mil-spec detent springs made in the USA, sized to drop right into most AR-15 lowers and hold your takedown and pivot pins where they belong.
The spring sits behind the detent in your receiver and keeps steady tension on it. That tension is what locks the takedown and pivot pins in place so the upper and lower stay married up during use, while still letting you push the pins to break the rifle down for cleaning. When a spring gets weak, kinked, or wanders off during assembly, the pin won't hold and the rifle feels loose. A fresh spring puts that tension right back.
These are the classic "Pegasus missile" parts that launch across the room the second you lose your grip on the detent. Having a handful of spares means one lost spring doesn't stall your build or leave you waiting on a shipment. It's the same reason a lot of builders keep extras in a parts bin. Buy the ten-pack once and you're covered for years of builds, swaps, and the occasional runaway spring.
These work great whether you're assembling a stripped lower from scratch or bringing an older rifle back to spec. They pair with standard detents and mil-spec pins, so there's nothing proprietary to fuss over. A pivot pin install tool or a steady hand with a punch and hex key makes seating them a lot easier and keeps them from taking flight. Made in the USA and priced to keep a stash on the bench, they're the kind of small part you're glad to have when you need one.
The spring sits behind the detent and keeps constant tension on it, which locks the takedown and pivot pins in your lower. That tension holds the upper and lower together during use while still letting you push the pins to break the rifle down. If the spring is worn or missing, the pin won't stay put and the rifle feels loose.
They're standard mil-spec detent springs and drop into most mil-spec AR-15 lower receivers with no fitting required. They pair with common detents and standard takedown and pivot pins. If your lower is built to mil-spec, these should seat right in.
These springs are notorious for launching across the room during installation, so having extras on hand keeps a lost one from stalling your build. Ten in a pack means you can knock out several rifles or repairs without reordering. Most builders keep a few spares in the parts bin for exactly this reason.
You can do it with a punch, a hex key, and a little patience, though the spring and detent are under tension and like to fly. A dedicated pivot pin install tool makes the job much easier and keeps parts from taking off. Either way, seat the spring first, then the detent, and capture both with the pin.
| UPC | 765857617688 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ARTDDS |
| Color | Black |
| Model |
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