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Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20)

Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20)

4.6· 131 ratings

Best price now

$189.39at WalmartObserved at 2:16 PM

17% under what the other stores charge

Compared across 4 stores. Prices are checked against each store and labelled with when.

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Our take on the Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20)

The Milwaukee M18 FUEL SAWZALL (2821-20) is a cordless 18V reciprocating saw with a brushless POWERSTATE motor, 3,000 strokes per minute and a 1-1/4 inch stroke. It is built for demolition and rough cutting on job sites, with an adjustable shoe, LED light, electric brake and a hanging hook. It is a bare tool: no battery or charger in the box. At $189.39 at Walmart as of November 4, 2026, it sits at the low end of its recent new-price range across the 4 stores that list it.

Best forContractors cutting pipe, conduit and lumber on sitePlumbers and electricians doing demolition workOwners already on the M18 battery platformBuyers who want a lighter full-size recip saw
Pros
  • Fast cutting from 3,000 SPM and a 1-1/4 inch stroke
  • Brushless motor with REDLINK PLUS overload and heat protection
  • Lighter than the previous generation, which cuts fatigue
  • Adjustable shoe and LED light help with control and visibility
  • Wear-resistant blade clamp and metal-reinforced battery rails
Cons
  • Bare tool: battery and charger cost extra
  • 6.8 lb is still heavy for overhead work
  • Full-size body is 17 inches long, tight in cabinets
  • D-handle layout is less compact than a one-handed saw

Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20) prices at every store

  • WalmartNew

    In stockSold by Amazing Deals Plus

    $189.39Free shippingObserved at 2:16 PM
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  • Fenwick HardwareNew

    In stock

    $229.00Observed at 2:15 PM
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  • Home DepotNew

    In stock

    $249.00Free shippingObserved at 2:15 PM
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  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $194.97Free shippingObserved at 2:15 PM
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Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20) price history

Lowest price we've seen: $189.39 on Nov 4 at Walmart. Tracked across 4 stores since Nov 4.

What reviewers say

Owners rate it 4.6 out of 5 across 131 ratings, and the pattern is consistent: fast, powerful cutting and solid build quality. Complaints center on weight and the added cost of batteries for buyers new to M18.

Pros
  • Cuts faster than older corded and cordless saws
  • Durable through heavy job-site use
  • Good blade change system
  • Long runtime on XC5.0 batteries
Cons
  • Heavy for one-handed or overhead cuts
  • Bare tool means extra battery cost
  • Long body limits access in tight spaces

About the Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20)

The Milwaukee M18 FUEL SAWZALL® Reciprocating Saw sets a new benchmark for cutting speed, durability, and performance in demanding job site conditions. Engineered with a high-performance POWERSTATE™ Brushless Motor, this cordless reciprocating saw delivers up to 3,000 strokes per minute (SPM) and a 1-1/4" stroke length, enabling faster material removal and superior cutting efficiency. Equipped with REDLINK PLUS™ Intelligence, the tool ensures optimal performance while protecting against overload, overheating, and over-discharge. When paired with the M18 REDLITHIUM™ XC5.0 Battery Pack (sold separately), users benefit from up to 2.5X more runtime and extended battery life compared to competing models. Built for extreme durability, the M18 FUEL SAWZALL features a wear-resistant blade change system, anti-corrosion blade clamp, and metal-reinforced battery rails to withstand harsh job site environments. Despite its rugged build, this next-gen model is lighter than its predecessor, offering improved maneuverability and reduced fatigue. Additional features include an adjustable shoe for better blade control, an integrated LED light for enhanced visibility, and a hanging hook for convenient on-site storage.

Specifications

Power Type
Electric
Strokes Per Minute
3,000Source
Stroke Length
1.25 inSource
Volts
18Source
Tool Weight
6.8 lbSource

Questions and answers

Is the 2821-20 worth it over the previous generation?
Yes for most buyers. It is lighter, cuts faster and has the same M18 battery compatibility. If you already own the older saw and it works, the gain is real but not urgent.
Does it come with a battery and charger?
No. The 2821-20 is a bare tool. You need an M18 lithium-ion battery and charger, sold separately; Milwaukee rates runtime with the XC5.0 pack.
What blades does it take?
It uses standard 1/2 inch universal tang reciprocating saw blades, so most Sawzall-style blades fit. Match the blade to the material: wood, metal or demolition.
How does it compare with the M18 Hackzall?
The SAWZALL is bigger and more powerful, with a longer stroke for fast demolition cuts. The Hackzall is one-handed and lighter, better for overhead and tight spots.
When is the best price on this saw?
It was $189.39 at Walmart as of November 4, 2026, the low end of its recent range. Holiday and contractor-appreciation sales are the usual times for deeper cuts.
Where is the Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20) cheapest?
At Walmart, for $189.39, 17% under what the other stores charge, as of our latest check.
What do buyers say about the Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20)?
Rated 4.6 out of 5 from 131 ratings.
Where can I buy the Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20)?
4 stores we checked sell it, including Walmart, Fenwick Hardware, Home Depot, Amazon.

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Compare the Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20)

  • Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20) vs DeWalt 20V MAX XR Brushless Reciprocating Saw (DCS382)
  • Milwaukee M18 FUEL GEN-2 Reciprocating Saw (2821-20) vs Ryobi 18V ONE+ HP Brushless Reciprocating Saw (PSBRS01)

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Dimensions
17.1 x 3.6 x 6.3 inSource
Battery Included
NoSource
Charger Included
NoSource
Battery Type
Lithium-ionSource
Electric Brake
YesSource
Blade Type
1/2" Universal TangSource
Tool Length
17-7/64 in.Source
Handle Type
D-HandleSource