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B5 Systems AK Stock 4.5 mm – Black
When it comes to upgrading your AK, precision matters. The B5 Systems AK Stock 4.5 mm (Black) delivers a rock-solid, adjustable platform built for shooters who demand comfort, control, and consistency. It’s a drop-in replacement that transforms the feel of your rifle without changing its soul.
Engineered for rifles using a 4.5 mm folding trunnion, this stock blends mil-spec strength with modern ergonomics and a sleek, non-reflective black finish that looks as tough as it performs.
Engineered for Modern AK Platforms
Whether you run an Arsenal, PSA, or SLR, the B5 Systems AK Stock mounts directly using your factory 4.5 mm pin—no permanent modification required. Each component is built to provide a consistent cheek weld, smoother handling, and long-term reliability.
Key Features
- 5-Position Adjustable Length of Pull for personalized fit and shooting stance.
- Ergonomic Cheek Weld for faster target alignment.
- QD and Fixed Sling Mounts supporting multiple carry options.
- Cushioned Non-Slip Buttpad to absorb recoil and maintain control.
- Optic Rail Cutout compatible with side-mounted optics.
- Reinforced Composite Body + Steel Hardware for years of field abuse.
- Molded Black Finish—not painted, so it never scratches or fades.
- Proudly Made in the USA.
Why Black Still Rules
The Black version represents classic form with modern strength. Its subdued matte finish pairs perfectly with tactical builds, providing a professional look that resists scuffs and glare.
Because the pigment is molded into the polymer, it stays black for the life of the stock—no chipping, no shine, no nonsense.
Built to Perform Under Pressure
This isn’t a “budget accessory.” It’s a professional upgrade. The adjustable length of pull helps shooters fine-tune control and sight alignment, while the cushioned buttpad and balanced design minimize fatigue over long sessions.
You’ll feel the difference the first time you press the trigger.
Technical Specifications
| Spec | Detail |
|---|---|
| Color | Black |
| Material | Reinforced polymer + steel hardware |
| Mount Type | 4.5 mm folding trunnion pin |
| Adjustment | 5 positions |
| Weight | Approx. 14.4 oz |
| Origin | USA |
Installation Made Simple
- Remove your current folding stock.
- Align the B5 Systems AK Stock with the 4.5 mm trunnion pin.
- Secure using included hardware.
- Verify full lock-up and adjustment range.
Average install time: 15 minutes or less—no gunsmithing required.
Why B5 Beats the Competition
| Feature | B5 Systems AK Stock | Typical Imports |
|---|---|---|
| Made in USA | ✅ Yes | ❌ No |
| Adjustable LOP | ✅ 5-Position | ⚠️ Fixed |
| Color Durability | ✅ Molded Polymer | ⚠️ Painted |
| Optic Compatibility | ✅ Yes | ⚠️ Limited |
| Recoil Comfort | ✅ Cushioned Buttpad | ⚠️ Hard Polymer |
B5 Systems combines American manufacturing with combat-tested ergonomics to deliver an AK stock that simply outclasses the rest.
Frequently Asked Questions
Q: Will this fit PSA or Arsenal AKs?
A: Yes, it’s compatible with all 4.5 mm folding trunnion AKs (Arsenal, PSA, SLR).
Q: Is the black finish painted?
A: No, the color is molded into the polymer for maximum durability and scratch resistance.
Q: How long does installation take?
A: Around 15 minutes with basic tools—no gunsmithing required.
Q: Is it adjustable?
A: Yes, a 5-position length of pull lets you customize fit and handling.
Q: Where is it made?
A: Every B5 Systems stock is proudly made in the USA.
Upgrade Your AK Today
If you’re serious about precision and comfort, the B5 Systems AK Stock 4.5 mm (Black) delivers both. Lightweight, durable, and purpose-built—it’s the finishing touch your rifle deserves.
Shop now and experience the difference.
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to - www.P65Warnings.ca.gov.
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