Description
Fierce Firearms Chassis Kit — Tungsten Gray | Fits AR-15 Long-Action* | Model LACHSTU | UPC 853418803936 Modernize your rifle with a purpose-built precision backbone. The Fierce Firearms Chassis Kit in Tungsten Gray (LACHSTU) delivers the rigidity, adjustability, and modularity serious shooters demand—turning your build into a repeatably accurate, bag-friendly, and accessory-ready platform. With broad M-LOK® coverage, a tunable buttstock section, and a rock-solid bedding interface, this chassis helps you lock in natural eye alignment, tame recoil movement, and shrink groups—whether you’re hunting, shooting steel, or training positional skills. Model/SKU: LACHSTU UPC: 853418803936 Finish/Color: Tungsten Gray (low-glare, abrasion-resistant) Fitment: AR-15 long-action* pattern (see important compatibility notes below) *“Long action” here refers to receiver/bolt-length compatibility defined by the manufacturer. Standard AR-15 receivers are traditionally “short” pattern; always verify your upper/lower interface, cartridge overall length, bolt, magazine spec, buffer system, and mounting points before purchase. Why Upgrade to the Fierce Tungsten Chassis Rigid accuracy foundation: The monolithic chassis minimizes flex and bedding shift, helping your zero stay put through heat cycles, travel, and seasonal swings. Shooter-first ergonomics: Adjustable cheek riser and length of pull let you dial a relaxed, repeatable head position for faster target acquisition and less parallax error. M-LOK® everywhere you need it: Mount bipods, ARCA plates, barricade stops, QD sling cups, and internal/external weights exactly where performance demands—without unnecessary bulk. Tungsten Gray durability: A premium, low-reflectivity finish that looks professional and shrugs off weather, dust, and range abuse. Better balance & recoil tracking: Flat, bag-friendly geometry and weight-tuning options promote straight recoil and quicker sight return for faster corrections. Future-proof modularity: Update optics, supports, and accessories over time without changing your core chassis. Key Features at a Glance Platform: AR-15 “long-action” receiver spec (manufacturer-defined; verify interface for your build) Adjustability: Cheek height & length of pull micro-adjustment (tool or tool-less varies by package—confirm contents) Forend: M-LOK® slots at multiple clock positions for accessories and weights; ARCA compatibility via M-LOK® adapters Buttstock Section: Flat underside for consistent rear-bag tracking; integrated QD sling points (check inclusion) Grip Interface: Accepts standard AR-style pistol grips (choose your preferred angle and texture) Finish: Tungsten Gray, abrasion-resistant, low glare Model: LACHSTU | UPC: 853418803936 What’s in the box may vary. Confirm included mounting hardware, spacers, QD cups, and any ARCA/weight kit compatibility with your retailer before purchase. Real-World Performance Benefits Repeatable precision: Rigid bedding and consistent interface help deliver predictable cold-bore impacts and tight vertical through strings. Natural eye alignment: Fine cheek and LOP adjustments reduce neck strain and parallax—vital for long days on glass. Positional stability: Forend and butt geometry integrate cleanly with barricades, tripods, and rear bags for PRS-style practice and field use. Weatherproof confidence: Non-warping chassis construction resists moisture and temperature shifts better than traditional stocks. Ideal Use Cases Predator & varmint hunting: Pair with a compact bipod and rear bag for steady, low-recoil strings on small targets across open country. Long-range/steel practice: Build a forgiving positional rifle with tuned balance and repeatable ergonomics. General precision carbine: Combine with a quality barrel and optic for a versatile rig that handles near-to-far engagements. Compatibility & Fit Notes Receiver interface: Built for the manufacturer’s AR-15 “long-action” specification. Verify your upper/lower geometry, bolt/magazine spec, and recoil/buffer system. Barrel & gas system clearance: Confirm barrel contour, gas block size, and handguard/forend clearance if adding full-length ARCA or weight systems. Grips & accessories: Accepts most AR-style pistol grips and M-LOK® accessories. Magazine system: Ensure your cartridge and magazine standard match the chassis’ cut and latch geometry. Suggested Setup (Pro Tips) Optic: 3–15x or 4–16x with a zero stop and dependable tracking; mount as low as practical, then set cheek height to match. Support: A cant/lock bipod, a small rear bag, and a low-profile barricade stop up front. Trigger: A crisp single- or two-stage trigger maximizes the chassis’ stability advantage. Balance: Add M-LOK® weights or an ARCA plate to tune center of gravity for your positional style. Sling: Two-point QD sling for hike-in carry and quick loop-up shooting support. Installation (Quick Guide) Unload & clear your firearm. Separate upper/lower; remove existing stock/handguard/furniture as required. Seat & torque the receiver into the chassis per manufacturer specs; use thread prep where directed. Adjust cheek riser and LOP to your optic height and posture; lock settings. Verify function: Magazine insertion/ejection, safety, trigger operation, bolt travel. Zero & confirm: Re-check torque after the first range session and validate zero. New to chassis installs? A qualified armorer can ensure correct torque, thread prep, and magazine fitment. Care & Maintenance Wipe down with a damp cloth; avoid harsh solvents on coated surfaces. Re-torque action screws and forend accessories seasonally or after travel. Inspect M-LOK® hardware and QD points; use thread prep per accessory maker. Protect exposed fasteners with a light corrosion inhibitor in humid/salty environments. Specifications (Quick Reference) Brand: Fierce Firearms Product: Chassis Kit (Tungsten Gray) Fitment: AR-15 long-action pattern (manufacturer-defined; verify your receiver and cartridge system) Adjustability: Cheek height & length of pull Mounting: M-LOK® forend; QD sling provisions (varies by package) Finish: Tungsten Gray, low-glare, abrasion-resistant SKU: LACHSTU UPC: 853418803936 Frequently Asked Questions Q: Will this fit a traditional AR-10 (.308) large-frame build? A: This model targets the manufacturer’s AR-15 “long-action” spec. AR-10/LR-308 patterns differ dimensionally. Confirm fitment before purchase. Q: Is an ARCA rail included? A: Typically sold M-LOK®-only; add ARCA plates/rails as needed. Check your retailer’s listing for included hardware. Q: Can I add a folding mechanism? A: Folding adapters depend on your buffer/receiver extension and recoil system. Verify compatibility with your chosen folder. Q: What torque values should I use? A: Follow Fierce/ accessory-maker torque specifications for action screws and M-LOK® fasteners; witness-mark critical screws. Q: Does the Tungsten finish match other “tungsten” parts? A: The hue is a premium neutral gray; minor shade differences can occur across brands and coatings. SEO-Friendly Highlights (Naturally Woven) Fierce Firearms Chassis Kit Tungsten Gray, AR-15 long-action precision chassis, adjustable cheek riser & LOP, M-LOK® forend, rigid bedding for repeatable accuracy, rear-bag-friendly stock geometry, modular precision rifle chassis LACHSTU, UPC 853418803936. Meta for Your Product Page Meta Title: Fierce Firearms Chassis Kit — Tungsten Gray | AR-15 Long-Action | LACHSTU Meta Description: Upgrade your rifle with the Fierce Tungsten Gray Chassis Kit. Adjustable cheek/LOP, M-LOK® forend, rigid accuracy foundation, and bag-friendly geometry. Model LACHSTU — UPC 853418803936. Build your rifle around rigidity, adjustability, and modular control—the Fierce Firearms Tungsten Gray Chassis Kit (LACHSTU) is the precision base your advanced AR build deserves. The End
