Description
SIG SAUER CROSS .277 SIG FURY 20-Inch Bolt-Action Rifle
The SIG SAUER CROSS in .277 SIG FURY is a purpose-built precision bolt-action rifle that combines a compact folding chassis with field-ready handling and a chambering engineered for SIG’s 6.8×51 hybrid cartridge family. This exact black model is identified by manufacturer part number CROSS-277-20B (stored in the catalog as CROSS27720B) and UPC 798681705191. It pairs a 20-inch barrel with an adjustable stock, AICS-pattern magazine compatibility, and an integrated optic rail in a package suited to hunters and precision-rifle shooters who want a lightweight, configurable platform.
20-Inch .277 SIG FURY Barrel
SIG equips this CROSS variant with a 20-inch cold-hammer-forged steel barrel and a 1:10-inch twist rate. The muzzle uses 5/8×24 threads with SIG’s tapered-shoulder geometry, while the included thread protector and taper cap preserve a conventional shoulder interface when needed. The free-floating barrel and rigid receiver arrangement help keep external pressure off the barrel during supported shooting. Because this is the .277 SIG FURY model, ammunition selection should match the caliber markings on the rifle and the manufacturer’s current guidance.
Lightweight Chassis and Optics Interface
The CROSS uses a lightweight one-piece receiver and a 15-inch free-floating M-LOK handguard. M-LOK slots provide practical mounting positions for a bipod, sling hardware, barricade stop, or other compatible accessories without forcing unnecessary equipment onto the rifle. A factory 20-MOA Picatinny optic rail gives the user a solid starting point for mounting a precision riflescope and preserves additional elevation adjustment for longer-range use. An optic is not included with this configuration.
The black anodized alloy forend and black finish give the rifle a subdued, uniform appearance. The reduced-angle, AR-compatible grip supports a natural wrist position from prone, bench, or field positions and can be replaced with a compatible grip when the shooter wants a different texture or geometry.
Folding, Fully Adjustable Stock
A defining feature of the CROSS platform is its folding precision-adjustable stock. The stock folds to reduce the rifle’s transport length and provides adjustments that help the shooter establish repeatable eye alignment and shoulder placement. SIG lists this model at approximately 40.5 inches with the stock extended, 38.5 inches collapsed, and 29.5 inches folded. The catalog’s protected length value of 38.5 inches therefore corresponds to SIG’s collapsed-stock specification. Factory-listed weight is approximately 7.1 pounds, balancing portability with the stability expected from a precision-oriented rifle.
Trigger, Safety, and Feeding System
The CROSS uses a two-stage adjustable match trigger with a curved face. SIG specifies an adjustment range of approximately 2.5 to 4 pounds, allowing the owner to configure the pull within the manufacturer’s intended range. An ambidextrous AR-style safety is positioned for familiar operation from either side of the receiver.
Feeding is through AICS-pattern magazines. This package includes one five-round polymer magazine, producing the cataloged 5+1 capacity when loaded in accordance with applicable law and safe handling practices. AICS compatibility also gives owners an established magazine format, but individual aftermarket magazines should always be checked for caliber, length, and function before field use.
Exact Configuration Highlights
- Caliber: .277 SIG FURY / 6.8×51 hybrid cartridge designation
- Action: Bolt action
- Barrel: 20-inch cold-hammer-forged steel, 1:10 twist
- Muzzle: 5/8×24 tapered shoulder with thread protector and taper cap
- Capacity: 5+1; one five-round AICS-pattern polymer magazine included
- Handguard: 15-inch free-floating M-LOK alloy forend
- Optics mounting: 20-MOA Picatinny rail; optic not included
- Stock: Folding precision-adjustable design
- Trigger: Two-stage adjustable match trigger, approximately 2.5–4 pounds
- Safety: Ambidextrous AR-style
- Finish: Black
- Manufacturer part number: CROSS-277-20B
- UPC: 798681705191
Ownership and Transfer
This product is a serialized firearm and must be transferred through a federally licensed dealer in accordance with federal, state, and local law. Confirm caliber, magazine restrictions, transfer eligibility, and permitted features for your jurisdiction before ordering. Before use, read the current SIG SAUER manual, inspect the rifle and ammunition, and follow all manufacturer safety and maintenance instructions.




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