Fierce Firearms Chassis Kit — Black | Fits AR-15 Long-Action* | Model LACHSBL | UPC 853418803950
Upgrade your rifle with a foundation built for precision. The Fierce Firearms Chassis Kit in Black (LACHSBL) delivers the rigidity, adjustability, and modular mounting serious shooters demand—transforming your build into a repeatably accurate, bag-friendly, and accessory-ready platform. With expansive M-LOK® coverage, a tunable buttstock section, and a rock-solid bedding interface, this chassis helps you lock in natural eye alignment, control recoil movement, and shrink groups—from field hunts to long-range steel.
Model/SKU: LACHSBL
UPC: 853418803950
Finish/Color: Black (low-glare, abrasion-resistant)
Fitment: AR-15 long-action* pattern (see important compatibility notes below)
*“Long-action” here follows the manufacturer’s receiver/bolt-length standard. Traditional AR-15 receivers are typically “short” pattern; verify your upper/lower interface, cartridge COAL, bolt and magazine spec, buffer system, and mounting points before purchase.
Why Choose the Fierce Chassis (Black) for Your Long-Action Build
Rigid accuracy foundation: The monolithic chassis minimizes flex and bedding shift so your zero stays stable through heat, rough travel, and seasonal swings.
Shooter-first ergonomics: Adjustable cheek riser and length of pull let you set a relaxed, repeatable head position for faster target acquisition and reduced parallax error.
M-LOK® everywhere you need it: Add bipods, ARCA plates, barricade stops, QD sling cups, and internal/external weights exactly where performance demands—without excess bulk.
Low-glare Black finish: Professional aesthetics with real-world durability against scuffs, rain, dust, and range abuse.
Better balance & tracking: Flat, bag-friendly buttstock 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 replacing your core chassis.
Key Features at a Glance
Platform: Manufacturer-defined AR-15 “long-action” receiver spec (verify your interface)
Adjustability: Micro-adjust cheek height & length of pull (tool or tool-less varies by package—confirm contents)
Forend: M-LOK® slots at multiple clock positions; 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/texture)
Finish: Low-glare Black, abrasion-resistant coating
Model: LACHSBL | UPC: 853418803950
In-the-box items may vary. Confirm included mounting hardware, spacers, QD cups, and any ARCA/weight-kit compatibility with your retailer.
Real-World Performance Benefits
Repeatable precision: Rigid bedding and a consistent action interface deliver predictable cold-bore impacts and tight vertical through strings.
Natural eye alignment: Fine cheek/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 across open country.
Long-range/steel training: 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 face, magazine standard, and recoil/buffer system before purchase.
Barrel & gas system clearance: Confirm barrel contour, gas-block size, and 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 magazines 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 low, then set cheek height to align your eye perfectly.
Support: A cant/lock bipod, a small rear bag, and a low-profile barricade stop up front.
Trigger: Quality single- or two-stage trigger to capitalize on 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 match your optic height and posture; lock settings.
Verify function: Magazine insertion/ejection, safety, trigger, and 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 mag 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® fasteners/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 (Black)
Fitment: AR-15 long-action pattern (verify your receiver and cartridge system)
Adjustability: Cheek height & length of pull
Mounting: M-LOK® forend; QD sling provisions (varies by package)
Finish: Black, low-glare, abrasion-resistant
SKU: LACHSBL
UPC: 853418803950
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 are dimensionally different—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 before purchase.
Q: What torque values should I use?
A: Follow Fierce and accessory-maker torque specifications for action screws and M-LOK® fasteners; witness-mark critical screws.
Q: Will the Black finish match other anodized/Cerakoted parts?
A: The chassis uses a premium low-gloss black; minor shade differences may occur across brands and coatings.
SEO-Friendly Highlights (Naturally Woven)
Fierce Firearms Chassis Kit Black, 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 LACHSBL, UPC 853418803950.
Meta for Your Product Page
Meta Title: Fierce Firearms Chassis Kit — Black | AR-15 Long-Action | LACHSBL
Meta Description: Upgrade your rifle with the Fierce Black Chassis Kit. Adjustable cheek/LOP, M-LOK® forend, rigid accuracy foundation, and bag-friendly geometry. Model LACHSBL — UPC 853418803950.
Build your rifle around rigidity, adjustability, and modular control—the Fierce Firearms Black Chassis Kit (LACHSBL) is the precision base your advanced AR deserves.
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