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Sig Sauer® P320 XSeries TXG Full-Size Heavy Tungsten-Infused Polymer Grip Module – Sized Large – Legion Gray Finish – Magwell & Weight Compatible – 8900274
Product Description
The Sig Sauer® P320 XSeries TXG Full-Size Heavy Tungsten-Infused Polymer Grip Module (8900274) represents an elite technical milestone in modular handgun ergonomics, recoil dampening physics, and competition-grade workspace staging, masterfully manufactured by Sig Sauer. Purpose-built to maximize the performance envelope of Sig’s multi-patented standalone Fire Control Unit (FCU), this premium heavy-duty chassis injects race-gun mechanics directly into your shooting loop. Historically, achieving a flat, soft-shooting pistol platform required transitioning to entirely custom steel-frame handguns, introducing significant logistical expense and stripping away the modular utility of the polymer host. The TXG framework systematically shatters that boundary, combining a patent-pending tungsten-infused polymer blend that delivers the immense mass and tracking stability of raw steel alongside the elastic shock-damping flex of an advanced composite. Sized in the highly requested Large profile circumference, this module provides a robust, hand-filling purchase tailored to competitive marksmen, duty operators, and anyone seeking maximum weapon control.
The core performance victory of this gray-class upgrade asset relies on its high-density material formulation. By blending microscopic tungsten dust directly into the polymer liquid during the injection molding process, Sig Sauer achieves a bare module mass of 13.3 ounces—substantially heavier than standard factory plastic variants. This localized mass shifting drops the handgun’s natural center of gravity straight into the palm of your hand, converting your P320 into an ultra-stable shooting engine. When cycling heavy competition match loads or high-velocity defensive rounds, this added ballast actively fights muzzle rise, tames violent slide slap, and dampens linear recoil vectors. Finished in signature Legion Gray color aesthetics, the module is engineered with an extended, swept-back beavertail that safeguards against high-velocity slide bite while allowing your master hand to seat deeply beneath the bore line to maximize downward leverage.
The true operational victory of this factory OEM masterpiece lies within its cohesive integration layouts and built-in expansion channels. The frame features a deeply undercut trigger guard and a 5-slot Picatinny rail track underneath the dust cover to anchor full-size weapon lights and tactical training gear. The grip panels are molded with the signature XSeries crisp, low-slip checkering texture across all primary contact faces, creating an unyielding palm registration that cuts out frame drift during rapid-fire strings. Designed to accommodate full-size and X5 slide configurations, this premium upgrade is fully kitted with internal mounting points to accept the optional factory grip weights and flared magwell extensions (sold separately). Delivering total geometric authority over your weapon cycle, this 8900274 model transforms your P320 into a competitive powerhouse.
*(Note: The XSeries grip architecture is fully optimized for modern-pattern Sig Sauer magazines featuring the circular Sig Sauer logo and square locking tabs on the base pad. Legacy magazines featuring the traditional "SIG SAUER" text and round locking tabs possess prominent side wings that will conflict with this tight magwell profile and require minor basepad modification or replacement to lock up cleanly.)*
*Administrative Staging, Hand Size Calibration & Component Fitment Guidance: The Sig Sauer 8900274 TXG Grip Module is a non-serialized factory gun part requiring zero custom fitting or specialized tools to install. **CRUCIAL PLATFORM FITMENT WARNING:** This full-size frame is engineered strictly for 9mm, .40 S&W, and .357 SIG non-manual safety Fire Control Units (FCUs); it will not accept large-frame .45 ACP / 10mm Auto trigger blocks, nor will it accept manual-safety configurations without precise armorer cutting modifications. This specific model features the "Large" grip circumference profile, which thickens the front-to-back backstrap slope to accommodate larger hand structures or shooters looking to optimize trigger reach mechanics; users with smaller hands may prefer the small (8900273) or medium variants. To preserve its crisp tactile texturing, periodically clear out accumulated hand oils and powder residue using a nylon brush dipped in warm soapy water; always thoroughly dry the steel internal spring channels before dropping your metallic FCU back into the frame tracks.
Key Features
- Patent-Pending TXG Metallurgy: Tungsten-infused polymer blend infuses high steel-like mass directly into a flexible composite structure to isolate recoil shock.
- Sized Large Profile Perimeter: Extended grip circumference provides a full handhold and proper trigger index spacing for larger hand dimensions or competitive match grips.
- 13.3 oz Counterbalanced Ballast: Substantial bare frame mass actively dampens muzzle flip, allowing for flatter tracking and incredibly fast split-second target re-acquisitions.
- Extended Target Beavertail: Features an enlarged, sweeping backstrap tang that shields the shooter's hand from slide bite and funnels the grip high toward the bore axis line.
- Deep Double Trigger Undercut: Relieved guard throat profile clears tight clearance space, letting the support hand seat tightly to lock down cross-hand weapon stabilization loops.
- Expansion Weight Channels Pre-Cut: Internally channeled to drop-in mount the factory internal brass weight block and accepts screw-on flared magwells to maximize tournament versatility.
Product Specifications
- Brand: Sig Sauer® (Precision engineered, molded, and competition endurance vetted natively by Sig Sauer)
- Product Line: XSeries High-Performance Competition & Tactical Upgrade Components
- Model Series Designation: P320 XSeries TXG Full Size Grip Module Assembly
- SKU / MPN: 8900274 (Alternative Industry Identifiers: 8900274-SIG / GRIP-MODX-F-TXG-L-GRY)
- UPC Barcode Number: 798681632244
- Internal Chassis Compatibility: Fits Standard Sig Sauer P320 9mm / .40 S&W / .357 SIG Fire Control Units (**NO MANUAL SAFETY**)
- Slide Assembly Fitment Class: Engineered to mount XFIVE, Full-Size (4.7" Barrel), and Custom Compensated Slides
- Grip Perimeter Size Metric: Large (Fuller Palm Sweep / Deep Front-to-Back Trigger Reach Index)
- Chassis Core Material: High-Density Tungsten-Infused Proprietary Engineered Technical Polymer
- Frame Finish Color Scheme: Sig Sauer Legion Gray / Dark Matte Charcoal Gray Colorway
- Bare Module Component Weight: ~13.30 oz (~0.83 lbs) Massive Stabilizer Baseline
- Potential Loaded System Mass: Up to 16.60 oz (~1.04 lbs) when combined with optional internal grip weight and magwell funnel
- Dust Cover Rail System: Full-Length 5-Slot MIL-STD 1913 Picatinny Rail Interface Track
- Magazine Pipeline Compatibility: Modern Sig Sauer 17-Round and 21-Round Magazines with Square Basepad Tabs
- Magazine Catch Interface: Includes Factory-Installed Reversible Extended Matte Black Magazine Release Button
- Mechanical Installation Class: Toolless Drop-In Plug-and-Play Fire Control Unit Housing Swap
- Total Packaging Shipping Mass: ~1.20 lbs (Enclosed Inside Secure Protective Rigid Factory Branded Retail Box)
