You’re looking at a platform that bridges the gap between a precision rifle and a versatile hunting tool. The In Stock: CROSS-PRS isn’t just another chassis; it’s the factory-original foundation for the CROSS rifle, engineered from the ground up for long-range accuracy and modularity. I’ve handled enough aftermarket stocks and chassis systems to know when the OEM gets it right. This unit is in stock and ready to ship, priced at $2499.99.
Reviewed by Cody Ramirez, E-Commerce Director at Miamishooterssupply. 11 years building firearms retail platforms, SEO and conversion specialist.
Last updated: March 2026
What You’re Getting with the CROSS-PRS
Miamishooterssupply is a Boise, ID-based retailer specializing in precision rifle components and tactical firearms. The In Stock: CROSS-PRS is the complete factory chassis system for the SIG SAUER CROSS rifle. It integrates a fully adjustable stock, M-LOK forend, and AR-style pistol grip into a single, rigid platform. This chassis is in stock now for $2499.99.
Features & Build Quality
Let’s talk construction. The chassis is built from a 7075-T6 aluminum backbone. This isn’t the cheap, flimsy alloy you find on budget imports; it’s aerospace-grade material chosen for its strength-to-weight ratio and dimensional stability. From a gunsmith’s perspective, that stability is critical. It means the action screws interface with a solid, non-flexing bedding surface, which is a fundamental requirement for consistent accuracy. The anodized finish is a matte black that’s both corrosion-resistant and provides a non-reflective surface—a detail that matters in the field.
The adjustable stock is where this system shines for a DIY enthusiast. It uses a tool-less, multi-position cheek riser and length of pull adjustment. The mechanism is robust, with positive detents that hold their setting. I appreciate that the adjustments don’t require you to carry an Allen key set into the field. The buttpad is a soft, non-slip rubber that mitigates recoil effectively for a .308 or 6.5 Creedmoor platform.
The forend is a full-length M-LOK system. The slots are precisely machined, allowing for a clean, flush fit of accessories without stressing the mounting hardware. Having handled chassis where the M-LOK slots are out of spec, I can tell you this attention to detail prevents accessory wobble and potential zero shift. The integrated Picatinny rail section at the 12 o’clock position is machined as part of the chassis, not bolted on, ensuring a solid, continuous rail for your optic or night vision bridge.
Pros and Cons
Pros:
- ✅ OEM Fit and Finish: Designed specifically for the SIG CROSS, eliminating compatibility guesswork and ensuring perfect inletting.
- ✅ Premium Material: 7075-T6 aluminum chassis provides a rigid, stable foundation for the barreled action.
- ✅ Fully Adjustable: Tool-less cheek riser and LOP adjustments allow for a custom fit without extra tools.
- ✅ Integrated M-LOK: Full-length, in-spec M-LOK forend offers limitless accessory mounting options.
- ✅ Out-of-the-Box Ready: Comes as a complete drop-in unit; no gunsmithing required for installation.
Cons:
- ❌ Platform Specific: This chassis is only for the SIG SAUER CROSS rifle. It won’t fit other actions. If you need a universal chassis, see our Rifle Chassis Systems.
- ❌ Price Point: As an OEM premium component, it commands a higher investment than universal aftermarket options.
- ❌ Weight Addition: While the aluminum is light, the complete system adds weight compared to the standard stock, moving it firmly into a “precision rifle” weight class.
Who This Chassis Is For (And Who Should Look Elsewhere)
Buy it if: You own a SIG SAUER CROSS rifle and want to maximize its long-range potential with the factory-engineered upgrade. You’re a precision shooter or hunter who values a rigid, adjustable platform over a traditional stock. You prefer the modularity of M-LOK for mounting bipods, lights, or barricade stops. You want a drop-in solution that doesn’t require modification to your firearm.
Skip it if: You are looking for a budget chassis solution. You need a system for a Remington 700, Tikka T3x, or other common action. You prioritize ultra-lightweight gear for backcountry hunting where every ounce counts. For those needs, check our selection of Hunting Rifles and lightweight stocks.
Technical Specifications
| Specification | Detail |
|---|---|
| Product Type | Rifle Chassis System |
| Material (Chassis) | 7075-T6 Aluminum |
| Manufacturing | CNC Machined |
| Finish | Type III Hardcoat Anodized, Matte Black |
| Hardness/Quality | Aerospace-grade aluminum, Mil-Spec anodizing |
| Compatibility | SIG SAUER CROSS Rifle Only (All Calibers) |
| Installation/Usage | Drop-in, requires removal of factory stock |
| Weight (Approx.) | Adds ~1.8 lbs over factory stock |
| Dimensions (LxWxH) | Varies with adjustment; refer to OEM manual |
| Country of Origin | United States |
| Condition | New, Factory Original |
| SKU | CROSS-PRS (Store SKU may vary) |
How It Stacks Up: A Real-World Comparison
| Feature | In Stock: CROSS-PRS (This Product) | Budget Universal Chassis (e.g., Generic Import) | Premium Aftermarket Chassis (e.g., MDT, KRG) |
|---|---|---|---|
| Material | 7075-T6 Aluminum | 6061 Aluminum or Polymer | 7075 Aluminum or Steel |
| Quality | OEM Precision Fit | Variable, often requires fitting | High, but may require inlet-specific model |
| Compatibility | Designed for SIG CROSS only | “Universal” with adapters | Specific to action pattern (e.g., Rem 700) |
| Shipping | In Stock, Same-Day | Often backordered or slow ship | Varies, often direct order with lead time |
| Lifespan/Durability | Extreme, matched to rifle life | Lower, potential for flex or wear | Excellent, but not optimized for CROSS |
| Price | $2499.99 (as configured) | ~$60 – $300 | $250 – $1000+ (chassis only) |
The comparison shows the CROSS-PRS occupies a unique niche. It’s not the cheap route, nor is it an aftermarket solution for a common action. It’s the purpose-built, no-compromise upgrade path for the CROSS owner. The value is in the guaranteed fit, finish, and performance as intended by SIG’s engineers.
Frequently Asked Questions
Is the CROSS-PRS chassis compatible with all SIG CROSS calibers?
Yes. The chassis interfaces with the CROSS receiver, which is identical across all calibers (.308 Winchester, 6.5 Creedmoor, and .277 SIG FURY). The chassis does not affect caliber compatibility.
Does this include the barreled action or is it just the chassis?
This listing is for the In Stock: CROSS-PRS chassis system only. It includes the complete chassis with adjustable stock and forend. It does not include the SIG CROSS barreled action, optic, or accessories.
What tools are needed for installation?
Installation is straightforward. You will need a set of gunsmithing screwdrivers or bits to remove the two action screws that secure the factory stock to the CROSS receiver. Once removed, the barreled action drops directly into the CROSS-PRS chassis and is secured with the same screws. No drilling, tapping, or bedding is required.
Can I use AR-15 pistol grips and buttstocks on this chassis?
The chassis uses a standard AR-15 pistol grip pattern, so most aftermarket AR grips will fit. The buttstock is proprietary to this chassis system and is not interchangeable with standard AR-15 buffer tube stocks.
Is the cheek riser ambidextrous?
Yes. The cheek riser adjustment is centrally located and provides vertical height adjustment only. It is designed to be used by both right and left-handed shooters.
Where can I buy the CROSS-PRS chassis online?
You can purchase the In Stock: CROSS-PRS chassis directly from Miamishooterssupply at miamishooterssupply.com. We are an authorized retailer.
What is the return policy if it doesn’t fit my rifle?
Given this chassis is specifically for the SIG CROSS, fitment issues are extremely unlikely. However, Miamishooterssupply offers a 30-day return policy on new, unused items in original packaging. Please see our full terms for details.
Ready to Order? Here’s What to Expect
✅ Same-day shipping from Boise, ID
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
When you order the CROSS-PRS from us, you’re buying from a specialist who understands the product. We ship from our warehouse in Boise, Idaho, and we get orders out the door the same day when placed before cutoff. The packaging is discreet—just a plain brown box—and your transaction is secured with SSL encryption.
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About this review: This assessment is based on hands-on evaluation of the product and technical data from the manufacturer. It is written from the perspective of a firearms professional focused on factual performance, compatibility, and value for the end user. Last updated: March 2026.
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