Description
The factory magazine button on an AR is small, and if you've ever fumbled a reload trying to reach it, you know the frustration. The Armaspec B2 fixes that by extending the length of the stock button so you can dump a mag and load a fresh one without shifting your firing hand. It's a small part that makes a real difference the first time you run it at the range.
What the Armaspec B2 Brings to Your Lower
This one is machined from aluminum with a corrosion-resistant finish, and the serrated, skeletonized face is the detail that earns its keep. Those serrations give you positive purchase when you press, so your thumb doesn't slip off in the rain or when you've got gloves on. The skeletonized cut keeps things light too, coming in right around a tenth of an ounce, so you're adding function without any real weight. It drops into most Mil-Spec AR-15 and LR-308 lower receivers, which means it plays nice with both 5.56/.223 and 7.62/.308 builds.
Running the B2 With Other Controls
If you're building out an ambi or competition-style lower, the B2 is compatible with BAD levers and similar magazine release accessories, so it fits into a bigger control setup instead of fighting it. Folks who've installed it tend to mention how quick and painless the swap is and that it just works, plus it looks sharp on the lower. Armaspec offers it in several colors if you want to match a theme, but this black version keeps it clean and classic.
Installation is a straightforward drop-in that follows the same steps as a standard mag catch, so most people have it done in a few minutes with basic tools. Armaspec backs it with a lifetime warranty, and it's made in the USA. It's an easy upgrade that pays off every time you reload.
Key Specifications
- Manufacturer: Armaspec
- Model: B2
- Manufacturer Part Number: ARM107-BLK
- UPC: 810048490677
- Product Type: Extended Magazine Release
- Color / Finish: Black
- Material: Aluminum with corrosion-resistant finish
- Design: Skeletonized and serrated
- Compatibility: Most Mil-Spec AR-15 and LR-308 lowers (5.56/.223 & 7.62/.308)
- BAD Lever Compatible: Yes
- Weight: Approx. 0.14 oz
- Warranty: Lifetime
- Country of Origin: USA
What’s Included
- Armaspec B2 Extended Magazine Release (Black)
Frequently Asked Questions
Will the Armaspec B2 fit my AR-15 and AR-10?
Yes. The B2 is built to work with most Mil-Spec AR-15 and LR-308 lower receivers, so it covers both 5.56/.223 and 7.62/.308 builds. If your lower runs a standard mag catch, this drops right in.
Is the B2 mag release hard to install?
Not at all. It installs the same way as a standard magazine catch, so if you can swap a factory mag button you can handle this one. Most people have it done in a few minutes with basic hand tools.
Does the Armaspec B2 work with a BAD lever?
It does. The B2 is compatible with BAD levers and similar magazine release devices, so it fits into a larger ambidextrous or competition control setup without any fuss.
What is the B2 made of and how durable is it?
The B2 is machined from aluminum and given a corrosion-resistant finish, so it holds up to range use and weather. Armaspec backs it with a lifetime warranty, and it's made in the USA.






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