Milwaukee M18 Fuel Sawzall 2821
Reciprocating Saw
$199

Milwaukee

Milwaukee M18 Fuel Sawzall 2821

4.8(1,884 reviews across retail listings)

The Gen 2 M18 Fuel Sawzall, Milwaukee's mainstream cordless recip saw since late 2020. Marketed as the fastest-cutting saw in its class and lighter than the generation it replaced. The 2822 Super Sawzall sits above it for all-day demolition with orbital action.

Bare Tool
$199
Kit
$299
Platform
Milwaukee M18
Weight
6.8 lbs (bare)
Best for: Remodelers and plumbers on M18 who want corded Sawzall speed without the cord

Specifications

Category
Reciprocating Saw
Battery Platform
Milwaukee M18
Voltage
18V
Motor
Brushless
Model
2821-20
Weight
6.8 lbs (bare)
Released
2020
Stroke Length
1-1/4 in
Strokes/min
0-3,000 SPM
Blade Change
Tool-free
Shoe
Adjustable

Features

LED LightRafter Hook

Pros

  • Cuts at genuinely corded speed — the 'fastest in class' marketing holds up in side-by-side owner tests against DeWalt and Makita.
  • Nearly a pound lighter than the Gen 1 while gaining speed, which overhead demo users notice immediately.
  • The anti-corrosion tool-free blade clamp survives wet cast-iron and drain work that rusts other clamps shut.
  • Adjustable shoe extends blade life by letting you use fresh teeth sections.
  • Sawzall blades and parts are available literally everywhere, and a spare M18 battery is always around on a red crew.
  • Metal-reinforced battery rails fix the cracked-rail failure mode of earlier M18 saws.
  • The rafter hook is stout enough to actually trust on a ladder, not the decorative wire loop rivals fit.

Cons

  • No orbital action — aggressive wood demo is measurably slower than the 2822 Super Sawzall or orbital rivals.
  • Vibration control trails the Super Sawzall and Makita's XGT saw; long sessions leave your hands buzzing.
  • MSRP is $249 and street price hovers around $199 bare — a premium over comparable spec sheets.
  • It eats batteries fast under heavy load; owners recommend nothing smaller than a 5.0Ah High Output pack.
  • No variable-speed dial, only trigger control, which some finish-demo users miss.
  • Milwaukee sells four different M18 recip saws and the naming (Sawzall, Super Sawzall, Hackzall) confuses first-time buyers.

Common Questions

What's the difference between the 2821 Sawzall and the Super Sawzall?
The 2821 is the lighter mainstream saw; the 2822 Super Sawzall above it adds orbital action, more power, and better vibration control for all-day demolition — at more weight and money. Milwaukee sells four different M18 recip saws (Sawzall, Super Sawzall, Hackzall), and the naming genuinely confuses first-time buyers; for remodeling and plumbing the 2821 is the sweet spot.
Is it really as fast as a corded Sawzall?
The 'fastest in class' marketing holds up in side-by-side owner tests against DeWalt and Makita, and owners report it matching Milwaukee's own corded saws. It's also nearly a pound lighter than the Gen 1 it replaced while gaining speed — something overhead demo users notice immediately.
What size M18 battery should I run?
Owners recommend nothing smaller than a 5.0Ah High Output pack — the saw eats batteries fast under heavy load, and small packs both starve it and drain quickly. The upside of the M18 ecosystem is that on a red crew, a spare battery is always within reach.
Will the blade clamp survive wet cast-iron and drain work?
Yes — the anti-corrosion tool-free clamp was specifically improved to survive the wet cast-iron and drain cutting that rusts other clamps shut, which is why plumbers gravitate to this saw. The metal-reinforced battery rails also fix the cracked-rail failure mode of earlier M18 recips.
What does it give up to the competition?
No orbital action, so aggressive wood demo is measurably slower than orbital rivals, and vibration control trails the Super Sawzall and Makita's XGT saw — long sessions leave your hands buzzing. There's also no variable-speed dial, only trigger control. The stout, actually-trustworthy rafter hook partially atones.
Metabo HPT 36V MultiVolt CR36DA Reciprocating Saw
$199
Reciprocating Saw

The only cordless super saw that also runs corded: Metabo HPT's 36V MultiVolt flagship accepts batteries or the ET36A AC adapter for unlimited runtime. In Pro Tool Reviews' February 2026 head-to-head it scored 9.8/10, finishing within hundredths of a second of Milwaukee's M18 Fuel Super Sawzall in wood while posting top-tier vibration scores from its dual-counterweight User Vibration Protection system.

Hybrid AC/battery powerClass-leading vibration control9.8/10 Pro Tool Reviews score
Metabo HPT MultiVolt36V10.8 lbs (with 4.0Ah MultiVolt battery)Brushless
Best for: Remodelers and plumbers who want Super Sawzall-class demolition power with the unique option to plug in via AC adapter for all-day corded runtime
Full specs & owner notes
Flex 24V FX2271 Reciprocating Saw
$219
Reciprocating Saw

Flex's full-size flagship pairs a sensor-free 24V brushless motor with a long 1-1/4 in stroke at 3,000 SPM and selectable orbital action. Pro Tool Reviews scored it 9.2/10 and found it out-cut most of the cordless field, and Bob Vila named it the top pick of seven saws tested — with vibration damping that reviewers consistently single out as best-in-class.

1-1/4 in stroke at 3,000 SPMUp to 40% less vibration~50 4x4 cuts per 5.0Ah charge
Flex 24V24V9.5 lbs (with 5.0Ah battery)Brushless
Best for: Flex 24V users and demo crews who want flagship-brand cutting speed at a street price $50-100 under Milwaukee and DeWalt equivalents
Full specs & owner notes
Ridgid 18V Brushless Reciprocating Saw R8647
$169
Reciprocating Saw

Ridgid's brushless flagship recip pairs the class-leading spec combo of a 1-1/4 in stroke and 3,200 SPM with a switchable orbital mode, and Pro Tool Reviews clocked it cutting a nail-embedded roofing sandwich faster than Milwaukee's comparable saw (9.2/10 review score). Tool-free side-lever blade release, adjustable shoe, LED, and rafter hook are all standard, and Ridgid's Lifetime Service Agreement covers parts and service free with registration. At $169 bare it undercuts most premium-brand recips by $80-$120.

1-1/4 in stroke at 0-3,200 SPMOrbital action switch for fast wood demoLifetime Service Agreement with registration
Ridgid 18V18V8.3 lbs (with 4.0Ah battery)Brushless
Best for: Homeowners and remodelers on the Ridgid 18V platform who want near-flagship demolition speed at roughly half the price of premium rivals
Full specs & owner notes
Makita 40V XGT GRJ01 Reciprocating Saw
$249
Reciprocating Saw

Makita's full-size 40V XGT recip saw, rated for 145 cuts in 2x10 SPF per 4.0Ah charge. Two speed ranges, an electric brake, and Makita's crank-balanced drivetrain aimed at all-day demolition.

40V XGT power2-speed145 cuts/charge
Makita 40V XGT40V9.9 lbs (bare)Brushless
Best for: XGT crews doing sustained demo who want runtime and smoothness over portability
Full specs & owner notes
Craftsman V20 Brushless RP CMCS351 Reciprocating Saw
$149
Reciprocating Saw

The flagship of Craftsman's V20 recip lineup, the Brushless RP CMCS351B (launched with the RP line in 2022, superseding the CMCS350) delivers up to 75% more power than the brushed CMCS300 and tops the value class at 3,200 SPM. A two-speed selector, tool-free blade release, and LED light cover the essentials, and Ace Hardware buyers rate it 5.0 stars across 76 reviews — though it skips pro features like orbital action and a rafter hook.

2-speed, up to 3,200 SPM75% more power than brushed V20Frequent sub-$100 promo pricing
Craftsman V2020V6.92 lbs (bare tool)Brushless
Best for: Homeowners and DIYers already on Craftsman's V20 battery platform who want the most capable recip saw in the lineup without pro-brand prices
Full specs & owner notes
Makita 18V X2 LXT XRJ06 Recipro Saw
$274
Reciprocating Saw

Makita's flagship LXT recip saw is an X2 tool: it gangs two 18V LXT packs for 36V of power (hence voltage listed as 36 — it still lives on the 18V LXT platform with no new charger or batteries needed). The 2-speed brushless motor drives a long 1-1/4 in stroke at up to 3,000 SPM, and a refined crank mechanism keeps vibration and blade deflection unusually low. Tool-less blade change, electric brake, XPT weather sealing, and an LED with preglow/afterglow round it out.

1-1/4 in stroke length0-3,000 SPM 2-speed brushless motor36V power from two 18V LXT packs
Makita 18V LXT36V10.2 lbs (with 2 batteries)Brushless
Best for: Makita 18V LXT loyalists doing sustained demolition who want corded-class power and all-day runtime without leaving the LXT battery ecosystem
Full specs & owner notes