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Fierce Firearms MTN Reaper Long Action Chassis Kit – Tungsten Gray

UPC: 853418803936

$1,450.00

3 in stock

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Description

Fierce built the MTN Reaper Chassis to solve an old problem: how do you get real precision-rifle stability without hauling a heavy chassis up the mountain? The answer is a machined magnesium alloy frame that anchors your long action with a custom bedding setup, then wraps it in carbon fiber furniture to keep the weight down. This Tungsten Gray kit is the long action version, and it's the same core platform Fierce uses on their MTN Reaper rifles that hunters have been carrying into the backcountry for years.

The folding carbon fiber stock is the standout here. It locks and releases with a one-piece push-button system, so you can collapse the rifle for pack-in and snap it back into a rock-solid position when it's time to shoot. You also get an adjustable cheekpiece for a repeatable cheek weld, a vertical ergonomic pistol grip that installs much like an AR grip, and a carbon fiber M-LOK handguard up front for mounting slings, bipods, and lights wherever you need them.

What the MTN Reaper Chassis Brings to a Build

Magnesium is the trick that makes this thing so light while still holding zero. The block that houses the action and magazine well is machined from a magnesium alloy, which trims serious weight compared to a traditional aluminum chassis without giving up the rigidity you need for consistent groups. The chassis feeds from AccurateMag detachable box magazines and uses a paddle-style release at the rear of the mag, so reloads stay quick in the field.

Finish and Fit for the Long Action Reaper Chassis

The Tungsten Gray finish gives it a clean, muted tactical look that hides handling wear and holds up to weather out in the elements. If you're building or rebarreling a long action rifle and want a chassis that shoots like a precision gun but carries like a mountain rifle, this is the foundation Fierce designed for exactly that job.

Key Specifications

  • Manufacturer: Fierce Firearms
  • Model: MTN Reaper Chassis Kit (Long Action)
  • Manufacturer Part Number: LACHSTU
  • UPC: 853418803936
  • Finish / Color: Tungsten Gray
  • Action Fit: Long Action
  • Chassis Material: Machined magnesium alloy
  • Furniture: Carbon fiber stock, forend, and pistol grip
  • Stock Type: Folding carbon fiber with push-button lock
  • Cheekpiece: Adjustable
  • Handguard: Carbon fiber with M-LOK slots
  • Grip: Vertical ergonomic pistol grip
  • Magazine Type: AccurateMag detachable box magazine compatible
  • Magazine Release: Paddle-style

What’s Included

  • Fierce MTN Reaper magnesium chassis (long action)
  • Folding carbon fiber buttstock with adjustable cheekpiece
  • Carbon fiber M-LOK handguard
  • Carbon fiber vertical pistol grip

Frequently Asked Questions

What action does the MTN Reaper Chassis Kit fit?

This is the long action version of the Fierce MTN Reaper chassis, designed around Fierce's long action footprint and Reaper-style builds. It's meant as a standalone chassis kit for assembling or rebarreling a long action rifle, not a complete firearm. If your project is a short action, Fierce offers a separate short action kit with a different part number.

Why is the MTN Reaper chassis so much lighter than a typical chassis?

The main block that houses the action and magazine is machined from a magnesium alloy instead of standard aluminum, which cuts a meaningful amount of weight. Fierce then adds carbon fiber for the stock, handguard, and grip to trim even more. The result is one of the lightest chassis platforms out there without giving up rigidity.

Does the folding stock affect how solid the rifle feels?

No, the stock uses a one-piece push-button lock that snaps the buttstock back into a rigid, repeatable position. It folds for compact transport and pack-in, then locks up tight when you're ready to shoot. You also get an adjustable cheekpiece to dial in a consistent cheek weld.

What magazines does the MTN Reaper Chassis Kit use?

The chassis is set up to feed from AccurateMag detachable box magazines, which are a common precision-rifle standard. A paddle-style release sits at the rear of the magazine for fast, glove-friendly reloads in the field.

Additional information

UPC

853418803936

Manufacturer

Manufacturer Part Number

LACHSTU

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