Description
Fierce Firearms built its name on ultralight, sub-half-MOA mountain rifles, and the LACHSBZ chassis kit lets you bring that same engineering to your own long action build. This is the chassis platform pulled straight from the Reaper family, machined to shave weight without giving up the rigid, repeatable foundation that precision shooting demands. The bronze Cerakote finish gives it a clean, purpose-built look that holds up in the field.
What Sets the LACHSBZ Chassis Apart
The Fierce chassis system was designed around magnesium construction, which is a big part of how these rifles land in the featherweight class while staying stiff enough for real accuracy. You get a carbon fiber M-LOK handguard for mounting bipods, lights, and other accessories, plus a folding stock that tucks the whole rig down for pack-in hunts and tight storage. An adjustable cheekpiece lets you dial in a consistent cheek weld behind your optic, and that matters more than most people realize when you're stretching distance.
Familiar Controls, Backcountry Weight
One of the smartest things about this kit is that it runs AR-15 style pistol grips, so the ergonomics feel natural right out of the gate and you can swap in whatever grip you already like. Fierce ships these with an ergonomic grip, and the whole layout is built to keep control comfortable whether you're shooting off a bag, a bipod, or an improvised field rest. It's the kind of setup that closes the gap between a true long-range chassis and a rifle you can carry deep into the woods.
Fitment and Setup
This is the long action configuration, so it's cut for longer cartridge families and the corresponding action footprint. Because chassis fitment is specific, it's always worth confirming your exact action against Fierce's specs before you start the swap. Once it's bolted down, you've got a modular base ready for whatever barrel, trigger, and accessory package you want to build around it.
Key Specifications
- Manufacturer: Fierce Firearms
- Manufacturer Part Number: LACHSBZ
- UPC: 853418803943
- Product Type: Rifle Chassis Kit
- Fitment: Long Action
- Finish: Bronze Cerakote
- Chassis Material: Magnesium alloy
- Handguard: Carbon fiber M-LOK
- Stock Type: Folding with adjustable cheekpiece
- Grip Compatibility: AR-15 style pistol grips
What’s Included
- Fierce Firearms LACHSBZ chassis kit in bronze
- Carbon fiber M-LOK handguard
- Folding buttstock with adjustable cheekpiece
- Ergonomic AR-15 style pistol grip
Frequently Asked Questions
What rifle actions does the LACHSBZ chassis kit fit?
This kit is the long action configuration from Fierce Firearms, cut for longer cartridge families and their corresponding action footprint. Chassis fitment is always action-specific, so confirm your exact action against Fierce's specs before starting the install. If you're running a short action setup, Fierce offers the SACHS versions instead.
Does the Fierce LACHSBZ chassis use AR-15 grips?
Yes. The chassis is designed to accept standard AR-15 style pistol grips, so the controls feel familiar right away and you can swap in whatever grip you prefer. Fierce ships it with an ergonomic grip to get you started.
What makes this chassis so light?
The Fierce chassis platform is built around magnesium construction paired with a carbon fiber M-LOK handguard, which is how these rifles land in the featherweight class. That weight savings comes without sacrificing the rigidity you need for consistent long-range accuracy. It's the same approach Fierce uses on its Reaper mountain rifles.
Can I fold the stock for storage or packing?
The chassis features a folding stock, which is a big advantage for backcountry hunters and anyone tight on storage space. Folding it tucks the rig down and helps protect the bolt handle during transport. It locks back into place quickly when you're ready to shoot.




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