The Weatherby 307 Alpine MDT SB — 16″ Carbon Fiber Chassis is a production-ready, ultralight precision rifle built on the Model 307 action in partnership with MDT. This compact package pairs a 16-inch barrel with a carbon fiber chassis and folding buttstock, delivering a sub-6-pound platform for shooters who demand mobility without sacrificing accuracy. The MDT chassis accepts AR-style grips, aftermarket triggers, and standard AICS magazines, giving you a modular foundation for mission-specific setups.
| Manufacturer | Weatherby |
|---|---|
| Model | 307 Alpine MDT SB — 16″ Carbon Fiber Chassis |
| Material | Carbon fiber chassis, steel action, aluminum chassis components (per manufacturer specs) |
| Compatibility | Model 307 platform aftermarket stocks, triggers, rails, mounts; AICS pattern magazines; AR-15 style pistol grips |
| Finish | Matte black carbon fiber weave, matte black metal finish |
| Weight | 5.9 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Model 307 Action: Two-lug, fully cylindrical bolt design with a 60-degree bolt lift. Why it matters: Provides smooth, consistent feeding and extraction, and accepts a wide range of aftermarket triggers and bottom metal for customization.
- 16-Inch Barrel: Factory-cut to 16 inches with a threaded muzzle (5/8×24). Why it matters: Keeps the rifle compact for suppressed use, vehicle operations, or close-quarters precision work without sacrificing velocity on short-action cartridges.
- MDT Carbon Fiber Chassis: Full-length carbon fiber forend with M-LOK slots, integrated ARCA rail, and folding buttstock. Why it matters: Reduces weight to under 6 lbs while maintaining a rigid, free-floated barrel channel for consistent accuracy.
- Folding Buttstock: MDT SB Tactical SBA3-style adjustable stock with cheek riser and LOP spacers. Why it matters: Folds to reduce overall length to 27 inches for transport and storage, and provides a solid cheek weld for rapid target acquisition.
- Modular Compatibility: Accepts AR-15 grips, AICS magazines, and standard scope bases. Why it matters: You can build the rifle around your existing gear—run a Timney trigger, Magpul grip, and your preferred optic without proprietary parts.
Who It’s For
This rifle is built for operators, precision hunters, and competition shooters who need a lightweight, packable rig that doesn’t compromise on accuracy. If you’re a law enforcement sniper who needs a compact platform for vehicle-based work, a backcountry hunter who carries miles to the glassing point, or a PRS shooter who wants a light action for barricade stages, the 307 Alpine MDT SB delivers.
Pros / Cons
- Pro: Sub-6-pound weight makes it one of the lightest production chassis rifles on the market.
- Pro: Full MDT chassis system with ARCA rail and M-LOK for mounting bipods, tripods, and lights.
- Pro: Folding stock reduces packed length to 27 inches—fits in a backpack or vehicle case.
- Con: 16-inch barrel limits muzzle velocity on magnum cartridges; best suited for short-action calibers like 6.5 Creedmoor or .308 Win.
- Con: Price point at $3,000.50 is premium; not a budget option for casual shooters.
Comparison
| Feature | Weatherby 307 Alpine MDT SB | Zev Technologies ZEV Precision Rifle | Geissele Super Precision Rifle |
|---|---|---|---|
| Weight | 5.9 lbs | 7.2 lbs | 8.0 lbs |
| Barrel Length | 16″ | 18″ | 16.5″ |
| Chassis Material | Carbon fiber | Aluminum | Aluminum |
| Folding Stock | Yes | No | Yes |
| MSRP | $3,000.50 | $3,200 | $2,800 |
| Magazine Type | AICS | AICS | AICS |
FAQ
What calibers is the Weatherby 307 Alpine MDT SB available in?
Per Weatherby, the 307 Alpine MDT SB is currently offered in .308 Winchester, 6.5 Creedmoor, and .300 Winchester Short Magnum. The 16-inch barrel is optimized for short-action cartridges.
Does the folding stock lock securely when folded?
Yes. The MDT folding mechanism uses a positive-locking latch that engages the stock to the receiver. When folded, the stock locks in place and does not swing freely. A push-button release returns it to the shooting position.
Can I use standard AR-15 grips on this chassis?
Yes. The MDT chassis accepts any AR-15 pattern pistol grip. This allows you to install grips from Magpul, BCM, Ergo, or other brands to match your hand size and shooting style.
What scope base does the action accept?
The Model 307 action uses a standard Remington 700 short-action footprint for scope bases. Many aftermarket rails and rings from brands like Nightforce, Seekins, and MDT are compatible.
Is the barrel threaded for a suppressor?
Yes. The 16-inch barrel is threaded 5/8×24, which is the standard for .30-caliber suppressors. A thread protector is included.
According to NSSF data, compact precision rifles under 7 lbs represent 12% of the bolt-action market, growing 8% year-over-year as shooters prioritize portability. The Weatherby 307 Alpine MDT SB sits at the top of that segment.
- ✓ Nationwide delivery (all 50 states)
- ✓ Ships 1-2 business days
- ✓ 30-day returns
- ✓ Secure checkout
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Last updated: April 2026
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