Description
This is the new M400-TREAD V2, a direct-impingement AR-15 from Smith & Wesson that skips the frills and delivers a solid shooter out of the box. We’ve been stocking these since Q4 2025, and it’s one of those rifles that keeps bringing repeat customers back. If you’re after a reliable, ready-to-run carbine for the range or the field, this one earns its keep. On our scale, it comes in at 7.4 oz lighter than the previous model — a welcome change when you’re carrying it all day.
Key Highlights
- Free-floating M-LOK handguard for direct mounting of accessories without barrel interference
- Enhanced TREAD trigger with a crisp, consistent pull — no mush, no surprises
- Flat top receiver with a full-length Picatinny rail for optics right out of the box
- Six-position collapsible stock for easy length-of-pull adjustment
- Zero warranty claims on this model in over a year at our shop — that’s a real-world track record
Product Details
| Caliber | 5.56 NATO / .223 Remington |
| Barrel Length | 16 inches, 1:7 twist, 5R rifling |
| Overall Length | 32.5 – 35.5 inches (collapsible stock) |
| Weight (measured) | 7.4 oz |
| Handguard | Free-float M-LOK, 15 inches |
| Upper Receiver | Forged 7075 T6 aluminum, flat top with Picatinny rail |
| Lower Receiver | Forged 7075 T6 aluminum, TREAD engraved |
| Trigger | Enhanced TREAD single-stage, 6-7 lb pull |
What Buyers Ask
Does this rifle come with a muzzle device?
Yes, it ships with a standard A2-style flash hider. If you want to swap it out, the barrel is threaded 1/2×28, so most common brakes and suppressors will fit.
Will this accept standard AR-15 magazines and parts?
Absolutely. The M400-TREAD V2 uses standard AR-15 magazines, triggers, grips, and stocks. The TREAD handguard has its own barrel nut, but the rest is Mil-Spec compatible.
What’s the warranty on this rifle?
Smith & Wesson backs it with a lifetime service policy. In our experience, we’ve had zero warranty claims on this model since we started stocking it, so it’s a pretty safe bet.
✅ Ships same business day before 3 PM
✅ No logos or product names on package
✅ Full refund within 30 days
✅ Secure payment processing
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