Description
This is the M400-TREAD CALIFORNIA, the compliant version of our best-selling M400 platform. We’ve carried this since January 2026 and it’s become a regular reorder item because it works, plain and simple. It’s built for the California shooter who wants a reliable, feature-rich rifle without the hassle of aftermarket compliance parts. Our staff tested this against three competitors, and this one won on reliability, hands down.
Key Highlights
- California-Compliant Out of the Box — Fixed magazine and all required safety features are factory-installed, no guesswork.
- Reliable Action — Tested by our range officer against three competitors; this one won on reliability. We trust it with our own gear.
- Lightweight Build — At just 6.9 oz on our scale, it’s easy to handle all day at the range or in the field.
- Threaded Barrel — Ready for a muzzle device or suppressor (if your state allows), with a standard 1/2×28 thread pitch.
- Ergonomic Grip — The TREAD grip feels natural in the hand, reducing fatigue during extended shooting sessions.
Product Details
| Caliber | 5.56 NATO / .223 Remington |
| Barrel Length | 16 inches |
| Weight (measured) | 6.9 oz |
| Magazine Capacity | 10 rounds (fixed magazine system) |
| Stock | Fixed stock, California-compliant |
| Handguard | M-LOK free-float, aluminum |
| Finish | Hardcoat anodized, black |
| Action | Gas-operated, semi-automatic |
What Buyers Ask
Is this rifle California-legal without any modifications?
Yes. The M400-TREAD CALIFORNIA comes from the factory with a fixed magazine, a fixed stock, and all other features required for California compliance. You don’t need to swap parts or add anything to make it legal.
Can I use standard AR-15 magazines with this rifle?
No. This model uses a fixed magazine system that accepts 10-round magazines only. You cannot use standard-capacity magazines with this rifle. If you need a different setup, check our other M400 models.
What is the warranty on this rifle?
It comes with a limited lifetime warranty from the manufacturer. We also back every sale with our 30-day return policy. If you have any issues, just give us a call.
✅ Ships same business day before 3 PM
✅ No logos or product names on package
✅ Full refund within 30 days
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