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If you've ever spent twenty minutes chasing a detent spring across your garage while trying to seat a pivot pin, this set from Mean Arms will feel like a small miracle. These are enhanced takedown and pivot pins machined from Grade 5 (6AL-4V) titanium, built to drop into any standard AR-15 or M4 lower receiver in place of the pins that came with your rifle.
Grade 5 titanium is the real reason to pay attention here. It's noticeably stronger than commercially pure titanium while keeping the same stiffness and thermal behavior, and it brings excellent corrosion resistance to the table. On top of that base material, each pin gets a black TiCN coating that adds a hard, slick surface and a clean matte look that blends right in with a mil-spec build.
The standout feature is on the pivot pin itself, which is machined with two through-holes. Those holes let you hold everything in place while you work, so you're not fighting the detent and spring during install or removal. It's the kind of small design touch that turns one of the more aggravating parts of an AR build into a two-minute job.
Because these are cut to standard AR-15/M4 dimensions, they work as a straight upgrade or replacement on the vast majority of lowers out there. Titanium also runs lighter than the steel pins it replaces, so if you're chasing weight savings on a build, this is one of those quiet upgrades that adds up alongside everything else. Whether you're assembling a fresh lower or just tired of wrestling with your current pins, this set earns its keep every time you break the rifle down for cleaning.
Yes, these pins are machined to standard AR-15 and M4 dimensions, so they fit the vast majority of mil-spec lower receivers. They're designed as a direct swap for the takedown and pivot pins your rifle already uses. If your lower is built to spec, you're good to go.
They do, and it's the whole point of the design. The two through-holes let you pin everything in place while you seat the pivot pin, so the detent and spring stay put instead of launching across the room. It turns one of the trickiest parts of an AR build into a quick job.
Grade 5 titanium is significantly stronger than commercially pure titanium and brings solid corrosion resistance to the table. It also runs lighter than steel, which makes it a nice quiet weight-saver on a build. The black TiCN coating adds a hard, slick surface on top of that.
This particular set includes one enhanced takedown pin and one enhanced pivot pin. If you're building a stripped lower from scratch, you'll want to confirm you have detents and springs on hand, since those are among the most commonly lost small parts in any AR build.
| UPC | 855926007028 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 2100869 |
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