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Sig Sauer Factory Original Precision ARCA Handguard - Fits Sig Cross Long Action Chassis Platforms, Full-Length ARCA-Swiss Bottom Rail Interface, Integrated M-LOK Attachment Slots, CNC Machined Aircraft-Grade Aluminum Construction, Cerakote Moss Green Finish - 8902217 / 798681747498
Product Description
Upgrading a Sig Sauer Cross Long Action precision rifle for long-range hunting, PRS-style match shooting, or tripod-mounted field engagement demands a handguard engineered for rock-solid stability. Standard factory handguards often lack a flat bottom surface or built-in rail interface, forcing shooters to add bulky bolt-on rail adapters that flex or loosen under bipod and tripod load on your bench. The **Sig Sauer® Factory Original Precision ARCA Handguard for Cross Long Action (8902217 / 798681747498)** solves these mounting and stability challenges, replacing your stock handguard with a continuous **ARCA-Swiss bottom rail** finished in a factory Cerakote Moss Green dressing.
Engineered and precision CNC-machined in the United States by Sig Sauer, this factory OEM upgrade handguard is carved from lightweight, high-tensile **6061-T6 aircraft aluminum**. The flat bottom features a full-length, integrated 1.5-inch ARCA-Swiss dovetail rail, permitting fluid positional adjustment of tripod ball heads, precision bipods, and barricade stops across the entire length of the handguard. Surrounding the sides and top are modular **M-LOK® accessory slots**, allowing seamless attachment of weapon lights, night vision bridges, or sling mounts. Purpose-built specifically for the longer receiver dimension of the **Sig Cross Long Action chassis**, this drop-in upgrade maximizes rifle balance and tripod control straight from your armorer bench.
Precision-milled to mount natively onto Sig Cross Long Action receiver chassis assemblies, this factory-calibrated handguard guarantees absolute free-float barrel clearance and tripod rigidity directly from your workspace bench.
*Armorer Bench Notes & Real-World Cross Staging Guidance: The Sig Sauer 8902217 Moss Green ARCA Handguard package arrives workspace ready, containing the aluminum handguard body, receiver mounting barrel nut hardware, alignment pins, and installation instructions. SIG CROSS LONG ACTION RECEIVER INTERFACE MATRIX: This handguard is engineered natively, strictly, and dimensionally to fit **Sig Sauer Cross Long Action precision rifles (e.g., .300 Win Mag, .270 Win, 30-06 Springfield, 7mm Rem Mag Long Action receiver variants)**. *Short Action Compatibility Notice:* This handguard is dimensioned specifically for the extended receiver geometry of Long Action models—it will *not* fit standard Sig Cross Short Action rifles (.308 Win, 6.5 Creedmoor) due to receiver barrel nut spacing differences. Armorer Workbench Custom Staging Sequence: 1. Visually and physically confirm your host Sig Cross rifle is completely clear of live ammunition, the magazine is removed, and the bolt is open and checked safe. 2. Remove the factory short or standard M-LOK handguard by loosening the handguard retention screws at the front of the chassis receiver. 3. Clean the receiver extension mounting interface and barrel nut threads using isopropyl alcohol and a shop towel. 4. Slide the new Moss Green ARCA handguard over the barrel and align the internal mounting indexing lugs with the Cross Long Action receiver tracks. 5. Apply medium threadlocker (Blue Loctite) to the handguard retention screws and torque to **30 to 35 inch-pounds** in an alternating star pattern on your bench. 6. Verify that the barrel remains completely free-floated with uniform clearance around the interior bore wall before locking into a tripod and rolling downrange.*
Key Features
- Full-Length Integrated ARCA-Swiss Bottom Rail: Machined 1.5-inch dovetail rail along the entire underside allows instant, micro-adjustable clamping into tripod heads and ARCA bipods.
- Engineered Specifically for Sig Cross Long Action: Dimensioned to match the extended receiver lines and barrel lengths of long-action Sig Cross rifle chassis.
- Integrated M-LOK® Mounting Slots: Side and top surfaces feature M-LOK® attachment points for mounting barricade stops, rail sections, sling mounts, or lights.
- Precision CNC-Machined 6061-T6 Aluminum: Lightweight yet ultra-rigid aircraft-grade aluminum body eliminates forend flex under heavy tripod torque loads.
- Durable Cerakote Moss Green Finish: Factory-applied Moss Green Cerakote ceramic coating provides superior scratch resistance, chemical defense, and glare reduction.
- Factory Original Sig Sauer OEM Component: Guarantees perfect alignment, proper free-float barrel clearance, and exact color matching with factory Moss Green chassis finishes.
Product Specifications
- Brand: Sig Sauer® (Newington, NH / Made in the USA)
- Model Line: Cross Precision Rifle Accessories - ARCA Handguard Series
- MPN/SKU Code: 8902217 (Cross Long Action ARCA Handguard Moss Green Standard SKU)
- UPC Code Profile: 798681747498
- Host Rifle Fitment: Sig Sauer Cross Long Action Chassis Platforms (.300 Win Mag, .270 Win, etc.)
- Bottom Rail Standard: Continuous 1.5" ARCA-Swiss (Dovetail) Precision Interface
- Accessory Attachment Standard: Modular M-LOK® Slot Positions on Sides and Top
- Structural Material Base: Precision CNC-Machined 6061-T6 Billet Aircraft Aluminum
- Exterior Finish Dressing: High-Durability Factory Cerakote Moss Green Protective Coating
- Barrel Clearance Type: Full Free-Floating Barrel Contour Clearance
- Full Kit Component Checklist: 1x Sig Cross Long Action ARCA Handguard, Mounting Screws, Manual
- Packaging Format Class: Factory Original Sealed Sig Sauer Graphic Display Storage Box
- Product Type Category: Rifle Accessories / Precision Rifle Handguards & ARCA Rails
- Overall Unit Physical Length: ~15.50 Inches (~393.7 mm Handguard Profile)
- Net Component Mass: ~12.80 Ounces (~362.8 Grams Aluminum Handguard Weight)
- Global Quality Certifications: Formulated to Rigid US Precision Tactical & Competition Performance Standards
- Warranty Tracking Protection: Fully Backed by Sig Sauer Factory Limited Warranty
