Description
Getting a modern optic onto an AK has always been the tricky part, and the RS Regulate AK-302M Rear-Biased Lower is one of the cleanest answers out there. It clamps directly to the factory dovetail side rail on the left of your receiver and gives you a short section of Picatinny to build off of. The rear-biased design shifts your mounting point toward the back of the rifle, which pushes a red dot closer to your eye and opens up your field of view. If you like getting on the dot fast from awkward positions, that rearward bias makes a real difference.
How the AK-302M Fits Into the AK-300 System
This is a lower only, so it's half of a two-piece setup. You pick the lower that matches your rifle's side rail, then pair it with a compatible RS Regulate upper based on the optic you're running, whether that's an Aimpoint Micro, a prism sight, or a full scope on a flat-top upper. The whole point of the modular design is flexibility. Once you own a lower, you can swap uppers down the road without buying a whole new mount. It's built from 6061-T6 aluminum and tips the scale at just under 3 ounces, so it isn't adding meaningful weight to the gun.
What Makes the AK-302M Lock Up So Solid
The standout feature is the titanium-based locking system. It sits low and doesn't stick out past the side of the mount or crowd the trigger guard area, and it adjusts by hand without tools. Reviewers who've run these consistently report that you can pull the mount off and reinstall it without losing your zero, thanks to the tight machining tolerances. That repeatable lockup is the reason these have earned such a strong reputation among AK builders.
Fitment Notes for the AK-302M
This one is cut for standard AKM pattern side rails, covering most Russian, Bulgarian, and similar Eastern European rifles. It's a good match for a wide range of common AKM builds, but it is not designed for VEPR or FIME Vepr-FM rifles with factory folding stocks. If you're unsure about your specific variant, check your side rail dimensions before ordering. Made in the USA and backed by RS Regulate's reputation for rock-solid AK optic mounts.
Key Specifications
- Manufacturer: RS Regulate
- Model: Rear Biased Lower
- Manufacturer Part Number: AK-302M
- UPC: 617395300105
- Fitment: AKM Type Rifles (Russian, Bulgarian and other AKM pattern side rails)
- Material: 6061-T6 Aluminum
- Finish: Matte Black
- Locking System: Titanium-Based Low-Profile Lock
- Weight: 2.88 oz
- Dimensions: 4.78 x 0.55 x 2.16 in
- Style: Picatinny
- Product Type: Side Mount / Lower Optic Base
- System: AK-300 Modular Side Mount
- Requires: Compatible RS Regulate Upper Optic Mount
- Made In: USA
What’s Included
- RS Regulate AK-302M Rear-Biased Lower Optic Mount
Frequently Asked Questions
Does the AK-302M come with an upper optic mount?
No, the AK-302M is the lower half only. It attaches to your rifle's side rail and provides the base, but you'll need a compatible RS Regulate upper mount to actually attach your optic. The upper you choose depends on the red dot, prism, or scope you plan to run.
Will the AK-302M hold zero if I take it off and put it back on?
Yes, that's one of the big reasons people choose this mount. The titanium-based locking system is machined to tight tolerances so the mount returns to the same spot every time you reattach it. Users who take it on and off repeatedly report no meaningful shift in zero.
What rifles does the AK-302M fit?
It's designed for standard AKM pattern side rails, which covers most Russian, Bulgarian, and similar Eastern European AK variants. It is not compatible with VEPR or FIME Vepr-FM rifles equipped with factory folding stocks. If your rifle has a factory-installed left-side dovetail rail matching AKM spec, it should be a fit.
What's the advantage of the rear-biased design over a front-biased lower?
The rear-biased lower shifts your optic mounting point toward the back of the rifle, which brings a red dot closer to your eye and widens your field of view. This helps you pick up the dot quickly and works well for shooters who prefer a rearward optic position. If you'd rather mount your optic farther forward, the front-biased AK-301M is the counterpart in the same lineup.




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