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Mounting glass on a Zastava AK has always been a bit of a headache, and the RS Regulate AK-314MS Yugo Rear-Biased Lower is one of the cleanest fixes out there. This is the lower half of RS Regulate's two-piece AK-300 modular system, the setup that basically wrote the book on side-rail optic mounting when it launched back in 2012. It clamps onto your rifle's factory side rail and gives you a short section of Picatinny to build off of, letting you position your optic exactly where you want it over the bore.
The rear-biased design is the whole point here. It shifts your optic as far to the rear as the rail allows, which opens up your field of view and works great with short eye-relief optics like a compact ACOG, a prism sight, or a mini red dot. Since it's a shorter rail than the full-length option, it also shaves off a little weight, tipping the scales right around 3.4 ounces.
RS Regulate builds these from 6061-T6 aluminum and uses a low-profile titanium-based locking lever that doesn't stick out or crowd your trigger guard. Once you torque it down, it stays put through recoil, and because it's a quick-detach design, you can pull your optic for storage and drop it back on later without losing your zero. It's about as close to set-it-and-forget-it as AK optic mounting gets.
This one is cut specifically for Yugo and Serbian pattern rifles, so it's a match for M21, OPAP, NPAP, and PAP-style guns that came with a factory side rail. Rifles like the M92 and M85 don't have that rail from the factory, so they're not in the picture here. Keep in mind the lower is just the foundation. You'll need to grab the matching RS Regulate upper mount for whatever optic you're running, whether that's an AKM 30mm upper for a tube-body red dot, an AKR flat-top for a traditional scope, or an optic-specific base. Get the pair sorted and you're ready for the range.
No, this is the lower half of RS Regulate's two-piece AK-300 system. You'll need to add a compatible RS Regulate upper mount that matches your specific optic, such as the AKM 30mm upper for a tube red dot or the AKR flat-top for a traditional scope. The lower is the foundation you build your setup on.
It's designed for Yugo and Serbian pattern rifles with a factory side rail, including M21, OPAP, NPAP, and PAP-style guns. Rifles like the M92 and M85 don't have a factory side rail, so this mount won't work on them. If your Zastava came with a side rail from the factory, you're in good shape.
The rear-biased design positions your optic as far back as the rail allows, which opens up your field of view and pairs well with short eye-relief optics like compact ACOGs and prism sights. It's also lighter than the full-length version. If you run a mini red dot or a compact prism, this is usually the way to go.
Yes, that's one of the big selling points of the RS Regulate design. The titanium-based locking lever clamps tight to your side rail and returns to the same position, so you can pull your optic for storage or transport and put it back without re-zeroing. It stays locked down through recoil too.
| UPC | 617395300228 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | AK-314MS |
| Color | Black |
| Model | |
| Product Type | Side Mount |
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