Fierce Firearms Chassis Kit — Bronze | Fits AR-15 Short-Action* | Model SACHSBZ | UPC 853418803912
Give your rifle a purpose-built precision backbone. The Fierce Firearms Chassis Kit in Bronze (SACHSBZ) transforms an AR-15–size build into a rigid, modular, and ergonomically adjustable platform that’s ready for hunting, steel, and long-range training. With M-LOK® forend slots, a tunable buttstock section, and an ultra-stable bedding interface, this chassis delivers the repeatability you need to shrink groups and the comfort you want for all-day sessions.
Model/SKU: SACHSBZ
UPC: 853418803912
Finish/Color: Bronze (low-glare, field-tough)
Fitment: AR-15 short-action pattern* (see compatibility notes)
*Many shooters use “short action” informally for AR-15–length receivers (5.56/223, 224 Valkyrie, 6mm ARC, 6.5 Grendel, etc.). Always verify your upper/lower and cartridge interface before purchase.
Why Upgrade to the Fierce Bronze Chassis
Rock-solid accuracy foundation: A stiff, monolithic chassis minimizes flex and bedding shift so your zero stays put through heat cycles and travel.
Shooter-centric ergonomics: Adjustable length of pull and cheek height help you lock in a natural, repeatable head position for faster target acquisition and reduced parallax error.
M-LOK® everywhere you need it: Add bipods, ARCA plates, barricade stops, QD cups, and weights exactly where performance demands—without extra bulk.
Bronze finish with purpose: Durable, low-reflectivity coating stands up to weather, dust, and range abuse while delivering a premium aesthetic.
Better balance & recoil tracking: Flat, bag-friendly geometry and weight-tuning options promote straight recoil and smoother return-to-sight for faster corrections.
Drop-in modernization: Upgrade older furniture to a modern precision workflow with superior adjustability and accessory placement.
Key Features at a Glance
Platform: AR-15 short-action* receivers (verify your specific upper/lower pattern)
Adjustability: Micro-adjust cheek riser & length of pull (tool/tool-less varies by package—verify contents)
Forend: M-LOK® at multiple clock positions for accessories & internal/external weights
Buttstock Section: Flat underside for rear-bag tracking, integrated QD sling points (check inclusion)
Grip Interface: Accepts standard AR-style grips (choose the angle/texture you prefer)
Finish: Bronze, abrasion-resistant and low-glare
Model: SACHSBZ | UPC: 853418803912
What’s included can vary. Confirm in-the-box mounting hardware, spacers, QD cups, and any ARCA or weight kit compatibility with your retailer.
Real-World Performance Benefits
Repeatable precision: Rigid chassis + true bedding interface = consistent cold-bore and follow-up POI.
Natural eye alignment: Dial cheek/LOP to your optic height for less neck strain and steadier holds.
Stable across positions: The forend and butt geometry play nicely with barricades, tripods, and bags—ideal for PRS-style practice and field shooting.
Weatherproof confidence: Non-warping construction resists moisture and temperature swings better than traditional stocks.
Ideal Use Cases
Predator & varmint hunting: Add a compact bipod and run steady strings on small targets with quick follow-ups.
Long-range/steel practice: Build a forgiving positional rifle with tuned balance and repeatable ergonomics.
General precision carbine: Pair with quality barrel and glass for a versatile rig that handles ranges near and far.
Compatibility & Fit Notes
Designed for AR-15–size receivers. Confirm your magazine spec, buffer/receiver extension, and upper-receiver geometry before installation.
Works with most AR-style pistol grips and M-LOK® accessories.
Verify barrel contour & gas block clearance, especially with full-length accessories or ARCA rails.
If running heavy weights/ARCA: choose M-LOK® ARCA plates and weight kits that match the forend slot pattern.
Suggested Setup (Pro Tips)
Optic: 3–15x or 4–16x with zero stop and consistent tracking; mount as low as practical, then set cheek height to match.
Support: Lightweight bipod (cant/lock), small rear bag, and a low-profile barricade stop.
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 support.
Installation (Quick Guide)
Unload & clear your firearm.
Separate upper/lower and remove existing stock/handguard/furniture as required.
Fit receiver to the chassis per instructions; apply proper torque to action/receiver screws.
Adjust cheek riser & LOP to your optic/position; 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 magazine fitment.
Care & Maintenance
Wipe down with a damp cloth; avoid harsh solvents on the finish.
Re-torque action & forend accessories seasonally or after air/vehicle travel.
Inspect M-LOK® screws and QD points; use thread prep per accessory maker.
Protect exposed fasteners with a light corrosion inhibitor in humid/salty climates.
Specifications (Quick Reference)
Brand: Fierce Firearms
Product: Chassis Kit (Bronze)
Fitment: AR-15 short-action* pattern (verify your receiver)
Adjustability: Cheek height & length of pull
Mounting: M-LOK® forend; QD sling provisions (varies)
Finish: Bronze, low-glare, abrasion-resistant
SKU: SACHSBZ
UPC: 853418803912
Frequently Asked Questions
Q: Will this chassis fit an AR-10 (.308) large-frame build?
A: No—it’s intended for AR-15–size receivers. Large-frame patterns differ dimensionally.
Q: Is an ARCA rail included?
A: Typically sold M-LOK®-only; add ARCA plates/rails as needed. Check the listing for included hardware.
Q: Can I add a folder?
A: Folding adapters depend on buffer/receiver extension choices. Confirm compatibility with your recoil system.
Q: What torque should I use?
A: Follow Fierce/accessory manufacturer torque specs for action and M-LOK® hardware; witness-mark critical fasteners.
Q: How close is the Bronze to other “titanium/FDES” tones?
A: It’s a distinct metallic bronze; exact hue can vary slightly by batch and lighting.
SEO-Friendly Highlights (Naturally Woven)
Fierce Firearms Chassis Kit Bronze, AR-15 short-action precision chassis, adjustable cheek riser & LOP, M-LOK® forend, rigid bedding for repeatable accuracy, rear-bag-friendly stock geometry, modular precision rifle chassis SACHSBZ, UPC 853418803912.
Meta for Your Product Page
Meta Title: Fierce Firearms Chassis Kit — Bronze | AR-15 Short-Action | SACHSBZ
Meta Description: Modernize your AR-15 with the Fierce Bronze Chassis Kit. Adjustable cheek/LOP, M-LOK® forend, rigid accuracy foundation, and bag-friendly geometry. Model SACHSBZ — UPC 853418803912.
Upgrade the core of your rifle with rigidity, adjustability, and modular control—the Fierce Firearms Bronze Chassis Kit (SACHSBZ) is the precision base your AR deserves.
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