Sig Sauer M400 Tread Forward Grip Kit - M-LOK Interface, Lightweight Polymer Vertical Grip, Integrated Barricade Stop, Textured Interlocking Handstop Wedges, Matte Black Finish - KIT-TRD-GRIP-FORWARD-BLK / 798681598847
Product Description
Upgrading a modern sporting rifle, high-volume tactical carbine, or dynamic competition platform requires a fore-end layout that maximizes muzzle control and hand stabilization. Low-tier generic vertical grips add uncomfortable weight and introduce noticeable handguard flex, while single minimalist stops fail to provide an aggressive mechanical anchor point when loading into dynamic barriers on your bench. The **Sig Sauer® M400 Tread Vertical Forward Grip & Handstop Combo Kit (KIT-TRD-GRIP-FORWARD-BLK / 798681598847)** completely flatlines these handguard indexing and ergonomics limitations. It delivers a highly customizable, multi-configuration modular interface engineered straight from official Sig factory blueprints.
Proudly molded and field-tested in the United States by Sig Sauer, this high-performance ergonomics kit is engineered from a heavy-duty, impact-resistant **advanced polymer alloy** finished in a non-reflective matte black. The standout architectural choice is its comprehensive modular design: rather than offering just a single fixed peg, this turn-key layout includes a **low-profile vertical grip with a built-in aggressive barricade stop shoulder**, along with an assortment of interchangeable textured handstop blocks and interlocking index wedges. These separate components can be stacked, spaced, or combined across any standard **M-LOK compatible handguard lanes**, enabling armorers to dial in anything from a traditional vertical pull to a specialized C-clamp index profile. Outfitted with heat-treated steel T-nuts and high-friction side serrations, this multi-role grip kit transforms fore-end control parameters straight from your armorer bench.
Engineered to anchor securely onto any factory M400 Tread forearm or standard M-LOK tracking slots, this genuine factory accessory kit ensures absolute handling stability directly from your workspace bench.
*Armorer Bench Notes & Real-World Fore-End Staging Guidance: The Sig Sauer KIT-TRD-GRIP-FORWARD-BLK modular control package arrives workspace ready, containing 1x low-profile vertical grip module with integrated front barricade ridges, an assortment of 3x distinct interchangeable contoured handstop blocks, 2x full-length flat interlocking slot wedges, 3x small single-slot spacer pads, and a complete bag of high-tensile steel M-LOK fastening screws and T-nut plates. UNIVERSAL M-LOK SLOT INTERFACE MATRIX: Every component base inside this kit is engineered natively, strictly, and precisely to lock into **standard M-LOK (Modular Lock) handguard tracking slots**. *Handguard Profile & Custom Fitment Checklist:* While factory-branded for the **Sig Sauer M400 Tread series carbines**, these modular polymer scales drop smoothly onto **any standard aluminum or polymer M-LOK handguard channel** on your bench, providing immediate cross-platform flexibility. Armorer Workbench Custom Staging Sequence: 1. Visually and physically confirm your host long gun is completely clear of live ammunition, the magazine is separated, and the action tracking bay is completely open and safe. 2. Lay the rifle flat on your workbench or secure the handguard in a padded vise block to ensure a stable installation deck. 3. Test-fit the modular pieces by resting them externally along the lower handguard lane to establish your ideal support-hand grip spacing and optic alignment loops. 4. Pre-assemble the steel Allen screws through the grip and handstop base holes, threading the rectangular M-LOK T-nuts onto the back side by just a few turns. 5. Align the T-nuts horizontally, guide the assembly studs straight into the handguard slots, and push the component flush against the rail skin. 6. Use a high-quality hex key driver to tighten the screws clockwise, ensuring the backing T-nuts rotate 90 degrees to clamp down tightly against the inner wall. Final-torque each fastener strictly to **30 to 35 inch-pounds** to prevent loose tracking without stripping the polymer base material before rolling downrange.*
Key Features
- Comprehensive Modular Ergonomics: Bundles a low-profile vertical grip with an array of swappable handstops, index wedges, and slot textures, giving operators total freedom to build their preferred hand-stop profile.
- Built-in Front Barricade Stop: The vertical grip features an aggressive, forward-facing ridged face that bites firmly into wood blocks, window frames, or VTAC barricades to steady your long-range shots.
- Premium Structural Polymer Build: Machined from a high-tensile synthetic polymer alloy that resists hard field drops, aggressive chemical bore solvents, and high barrel temperatures on the range.
- Slick Non-Slip Linear Texture: All primary control surfaces are molded with high-friction side checkering and micro-ridges, ensuring a secure purchase in wet, muddy, or gloved hands.
- Snag-Free Radiused Contours: Every structural edge is carefully radiused and smoothed to create a low-drag exterior that won\'t snag on tactical vests, gear webbing, or thick brush lanes.
- Direct M-LOK Attachment Core: Outfitted with premium heat-treated steel hex screws and dynamic backing T-nuts, guaranteeing a rock-solid, wiggle-free anchor on any standard M-LOK forearm.
Product Specifications
- Brand: Sig Sauer® Inc. (Newington, New Hampshire / Proudly Made in the USA)
- Model Line: M400 Tread Factory Specialized Accessories & Modular Ergonomic Enhancements
- MPN/SKU Code: KIT-TRD-GRIP-FORWARD-BLK (M400 Tread Forward Grip Base Specification SKU)
- UPC Code Profile: 798681598847
- Handguard System Interface: Standardized M-LOK (Modular Lock) Access Tracking Lanes Natively
- Grip Core Footprint Layout: Low-Profile Compact Vertical Grip Profile paired with Multi-Piece Scale Kit
- Barricade Stabilization Array: Integrated Heavy-Duty Ribbed Front Textured Barricade Stop Face
- Structural Material Base: Impact-Resistant High-Tensile Weatherproof Injection-Molded Polymer Alloy
- Exterior Finish Dressing: Non-Reflective Solid Infused Matte Black Tactical Surface Coloration
- Fastener Interface Hardware: High-Grade Heat-Treated Steel Hex Socket Screws & M-LOK T-Nut Blocks
- Full Kit Component Checklist: 1x Vertical Grip/Barricade Stop, 3x Handstops, 2x Long Wedges, 3x Small Spacers, Complete Screw Pack
- Packaging Format Class: Factory Original Sealed Sig Sauer Retail Header Clamshell presentation Pack
- Product Type Category: Rifle Accessories / Fore-End Grips, Handstops & Rail Covers
- Overall Vertical Grip Height: ~2.75 Inches (~69.8 mm Low-Profile Mechanical Clearance Profile)
- Horizontal M-LOK Slot Span: Requires 2 Standard Lower M-LOK Slot Sections for Vertical Grip Anchor
- Net Combined Components Mass: ~3.20 Ounces (~90.7 Grams Combined Modular Scale and Hardware Weight)
- Global Quality Certifications: Engineered to Rigid Factory Commercial and Law Enforcement Print Tolerances
- Warranty Tracking Protection: Fully Backed by Sig Sauer Factory Material Performance Guarantee
