Sig Sauer P320C PROCUT Slide Assembly 9mm 3.9" Black - 8900949

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Sig Sauer® P320C PROCUT™ 9mm 3.9" Optic Ready Slide Assembly – XRAY3 Day/Night Suppressor Height Sights – Stylized Relief Cuts – Black Nitron Finish – 8900949

Product Description

The Sig Sauer® P320C PROCUT™ 9mm 3.9" Optic Ready Slide Assembly (8900949) represents a masterfully executed milestone in factory modular customization, high-performance handgun logistics, and custom EDC slide architecture, natively designed and manufactured in the USA. Purpose-built to upgrade or overhaul your standard modular P320 chassis, this premium slide assembly balances custom-shop styling with original equipment manufacturer (OEM) dependability. While legacy aftermarket slides often introduce frustrating tolerance stack-ups—leading to volatile feeding bugs, out-of-battery failure tracks, and voided factory warranties—the genuine Sig PRO-CUT series integrates directly with your existing internal fire control unit (FCU). This heavy-duty mechanical upgrade asset (798681664658) delivers an indispensable transformation path for competitive action marksmen, duty pistol staging setups, and everyday carry owners looking to modernize their workspace lines.

The foundational design triumph of this custom slide configuration relies on its striking, **precision CNC-machined geometric relief window cuts**. Rather than serving merely as a cosmetic statement, these windows systematically shave reciprocating internal mass off the stainless steel structure, resulting in a noticeably flatter recoil impulse, reduced muzzle dip, and accelerated cycle timing downrange. Additionally, the open-window configuration acts as a high-efficiency convective channel, exposing your barrel directly to ambient airflow to purge trapped thermal energy during long, high-volume multi-magazine tracking loops. The entire block is shielded in Sig’s legendary low-glare Black Nitron finish, providing deep molecular protection against holster abrasion, harsh skin acidity, and dynamic environmental degradation cells.

The true operational victory of this American-built masterpiece lies in its integrated **R2 optic-ready mounting interface paired with factory-installed XRAY3 Day/Night Suppressor Height Sights**. Out of the box, the slide features a removable rear top plate configured to accept high-output electronic aiming nodes like the Sig ROMEO1-PRO, ROMEO2, Leupold DeltaPoint Pro, or a Trijicon RMR when paired with an adapter sealing plate. Because the included tritium-infused 3-dot XRAY3 sights feature tall suppressor-height columns, they track clearly over the base of your red dot housing to guarantee an instant, co-witnessed analog backup plane. Moving past third-party alterations, this 8900949 upgrade bundle grants you complete structural and tactical authority over your modular platform alignment.

Includes: (1) Authentic Sig Sauer P320 3.9" Pro-Cut Assembled Slide Core (Black Nitron Stainless Steel Shell, Stylized Window Relief Cuts, Integrated Optics Cover Plate), (1) Pre-Installed Factory XRAY3 Tritium Day/Night Suppressor Height Front Sight, and (1) Pre-Installed XRAY3 Suppressor Height Rear Sight, Packed inside Original Branded Factory Sealed Retail Presentation Boxing.

*Administrative Mounting Component & Safety Guidance: The Sig Sauer 8900949 Pro-Cut Slide Assembly is engineered exclusively for standard 9x19mm Parabellum configurations utilizing a 3.9-inch non-threaded barrel or a 4.6-inch threaded barrel setup; it is structurally incompatible with .40 S&W, .357 SIG, or .45 ACP barrels and frames. **CRUCIAL ACCESSORY WARNING:** This product is a slide assembly only; the barrel, recoil guide rod spring assembly, and internal lower Fire Control Unit are not included and must be transferred from your donor pistol or purchased separately. Before dropping this slide over your active receiver module or adjusting optic retention screws, always visually and physically verify that your firearm frame is completely unloaded, cleared, and proven safe on your tracking bench.

Key Features

• Genuine Sig Sauer Factory OEM: Engineered to exact original equipment tolerances, allowing you to personalize your P320 without risking structural malfunctions or voiding factory assurances.
• Mass-Optimized Relief Windows: Stylized weight-reducing slide cuts lower reciprocating mass to soften muzzle flip while accelerating barrel cooling cycles under rapid pacing strings.
• XRAY3 Tritium Day/Night Sights: Equipped with premium suppressor-height 3-dot tritium sights that provide a bright, high-contrast sight picture in absolute darkness or blinding midday sun.
• R2 Intelligent Optic Footprint: Pre-cut top-accessible layout interfaces cleanly with standard ROMEO1-PRO, ROMEO2, and DeltaPoint Pro footprints to secure an absolute, low-profile red dot link.
• Durable Nitron Stainless Steel: Machined from a premium billet stainless steel block and treated with a hard Nitron Black armor coating to ensure supreme resistance to wear and rust.
• Versatile Grip Module Compatibility: Integrates smoothly across standard P320 Compact (non-X-Series) and Full-Size (both X-Series and non-X-Series) grip frames running a 3.9" barrel array.

Product Specifications

• Brand: Sig Sauer® (Engineered and manufactured natively with absolute accuracy in the USA)
• Product Line: Factory Original Replacement Parts, Upgrades, & Slide Modular Logistics
• Model Series Designation: P320 PROCUT 9mm 3.9" Slide Assembly – Nitron Black
• SKU / MPN: 8900949 (Alternative Industry Identifiers: 8900949-Sig / UT-8900949 / SIG8900949)
• Compatible Barrel Length Fitment: 3.9 Inches (Standard Non-Threaded) / 4.6 Inches (Threaded Variations)
• Caliber System Optimization: 9x19mm Parabellum / 9mm Luger Configuration Exclusively
• Primary Slide Metallurgy: Premium CNC-Machined Billet Stainless Steel Core
• Surface Protection Finishing: Anti-Reflective Wear-Defeating Matte Black Nitron Coating
• Optics Mounting Class: R2 Optics Cut (Removable Top Plate with Accessible Fasteners)
• Red Dot Footprint Mapping: ROMEO1-PRO, ROMEO2, DeltaPoint Pro, and Trijicon RMR (With Sealing Plate)
• Sights Specification Layout: High-Column XRAY3 Tritium Day/Night Suppressor Height 3-Dot Sights
• Loaded Chamber Indicator (LCI): No (Clean Target Silhouette Framework)
• Grip Core Fitment Profile: Compact, Carry, and Full-Size Modular P320 Grip Components
• Product Net Component Weight: ~10.70 oz (~0.67 lbs) - Stripped Assembly Shell Weight
• Total Packaging Shipping Mass: ~1.15 lbs (Enclosed Inside Heavy Padded Protective Presentation Box)
• UPC Barcode Number: 798681664658