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6 Best Alternatives to the Milwaukee 2621-20 M18 18V Lithium (2026)

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The Milwaukee 2621-20 M18 18V Lithium reciprocating saw delivers 3,000 RPM strokes through a durable all-metal gearbox and a Quik Lok blade clamp. Its 7.4-pound weight and counterbalance mechanism help reduce vibration during heavy demolition. This bare tool relies on the M18 battery system for power. You might look for Milwaukee 2621 20 M18 18V Lithium alternatives if you prefer a different voltage platform or need a more compact design for tight spaces. Some users may also want a brushless motor for longer runtime or a lighter tool for overhead work.

The alternatives in this list were chosen because their specifications overlap with the original Milwaukee model. Each option shares key traits like cordless operation and reciprocating saw functionality. You will find options ranging from high-speed brushless models to ultra-compact one-handed tools. Some feature integrated work lights for low-visibility areas. Others prioritize lightweight handling for extended use. This guide compares their specs to help you find the right fit for your specific job requirements.

Our top pick: Milwaukee M18 Cordless Sawzall.

How the Alternatives Compare

RYOBI ONE+ HP 18V Brushless Reciprocating Saw

The RYOBI ONE+ HP model shares the 18V platform but uses a brushless motor for efficiency. It weighs 7.2 pounds, which is slightly lighter than the Milwaukee’s 7.4-pound frame. The RYOBI measures 19.2 inches long, making it comparable in length to the Milwaukee’s 15.1-inch body plus handle. You get a bare tool here, just like with the Milwaukee. The RYOBI prioritizes raw cutting speed over the Milwaukee’s all-metal gearbox durability. If you already own RYOBI ONE+ batteries, this is a strong alternative. It sacrifices the Quik Lok clamp and counterbalance mechanism for a simpler, high-speed design. Choose this if you value brushless efficiency and do not need the Milwaukee’s specific vibration control features.

Makita 18V LXT Compact Reciprocating Saw

The Makita XRJ01Z is a compact reciprocating saw that weighs only 2.69 pounds. This is significantly lighter than the Milwaukee’s 7.4-pound weight. It measures 17 inches in length and 4 inches in width, offering a smaller footprint than the Milwaukee’s 15.1-inch length and 7.1-inch width. Like the Milwaukee, it is a bare tool compatible with 18V batteries, but it requires Makita LXT batteries instead. The Makita gives up the Milwaukee’s all-metal gearbox and counterbalance mechanism for extreme portability. It is ideal for tight spaces where the Milwaukee’s bulk is a disadvantage. You trade raw power and durability for ease of handling. Pick this Makita if you need a lightweight tool for overhead or confined area work.

DEWALT 20V Brushless Reciprocating Saw

The DEWALT DCS382B operates on a 20V system, so it is not compatible with your M18 batteries. It features a brushless motor, similar to the RYOBI alternative. The tool is designed as a compact reciprocating saw for users who already own DEWALT 20V batteries. It lacks the specific weight and dimension data in the provided specs, but it is positioned as a budget-friendly option. It gives up the Milwaukee’s all-metal gearbox protection and Quik Lok clamp. Instead, it offers brushless efficiency and a lower entry point for DEWALT users. You should pick this if you are switching ecosystems or already have DEWALT batteries. It is a practical choice for tradespeople who prioritize cost and brushless performance over the Milwaukee’s specific vibration control.

DEWALT ATOMIC 20V MAX One-Handed Reciprocating Saw

The DEWALT ATOMIC 20V MAX is a one-handed reciprocating saw that weighs just 1 pound. This is drastically lighter than the Milwaukee’s 7.4-pound weight. It measures 3.58 inches in width, height, and length, making it extremely compact compared to the Milwaukee’s larger frame. It uses a 20V battery system, so it is not compatible with M18 batteries. Like the Milwaukee, it is a bare tool. It sacrifices the Milwaukee’s power and durability for extreme maneuverability. The ATOMIC is designed for tight spaces and one-handed operation. You give up the counterbalance mechanism and all-metal gearbox for a tool that fits in small gaps. Choose this DEWALT if you need a lightweight, compact saw for detailed work where the Milwaukee is too bulky.

DEWALT 20V MAX Compact Reciprocating Saw

The DEWALT DCS387B includes a built-in work light, a feature the Milwaukee 2621-20 does not have. It weighs 4.96 pounds, which is lighter than the Milwaukee’s 7.4 pounds. The tool measures 5.81 inches in length, making it much shorter than the Milwaukee’s 15.1-inch body. It uses 20V MAX batteries, so it is not compatible with your M18 system. It is a bare tool, just like the Milwaukee. This model prioritizes visibility and compact size over raw cutting speed. It gives up the Milwaukee’s all-metal gearbox and Quik Lok clamp. The work light is useful for low-light confined spaces. Pick this DEWALT if you need a compact saw with illumination for tight areas. It is a practical alternative for users who value visibility and size over the Milwaukee’s heavier duty construction.

DEWALT 20V Brushless Reciprocating Saw

The DEWALT DCS382B is a 20V brushless reciprocating saw, so it requires DEWALT 20V batteries, not M18. It measures 16 inches in length and 7 inches in width, which is slightly longer and wider than the Milwaukee’s 15.1-inch length and 7.1-inch width. The tool is a bare tool, similar to the Milwaukee. It features a brushless motor and a pivoting shoe for steady cuts. It gives up the Milwaukee’s all-metal gearbox and counterbalance mechanism. Instead, it offers brushless efficiency and a pivoting shoe for better control. You should pick this if you already own DEWALT batteries and need a compact tool. It is a solid alternative for tradespeople who prioritize brushless performance and maneuverability over the Milwaukee’s specific vibration reduction features.

Quick picks

#ProductBest forPrice
1 Milwaukee M18 Cordless Sawzall Best overall M18 users needing durable demolition saws Check price of Milwaukee M18 Cordless Sawzall on Amazon
2 RYOBI ONE+ HP 18V Brushless Reciprocating Saw Also great Users needing high-speed cutting power Check price of RYOBI ONE+ HP 18V Brushless Reciprocating Saw on Amazon
3 Makita 18V LXT Compact Reciprocating Saw Also great tight spaces and users with Makita batteries Check price of Makita 18V LXT Compact Reciprocating Saw on Amazon
4 DEWALT 20V Brushless Reciprocating Saw Best budget existing DEWALT 20V battery owners Check price of DEWALT 20V Brushless Reciprocating Saw on Amazon
5 DEWALT ATOMIC 20V MAX One-Handed Reciprocating Saw Also great One-handed use in tight spaces Check price of DEWALT ATOMIC 20V MAX One-Handed Reciprocating Saw on Amazon
6 DEWALT 20V MAX Compact Reciprocating Saw Best work light confined spaces and low-light cutting Check price of DEWALT 20V MAX Compact Reciprocating Saw on Amazon
7 DEWALT 20V Brushless Reciprocating Saw Best premium Users with existing DEWALT 20V batteries Check price of DEWALT 20V Brushless Reciprocating Saw on Amazon

Our 7 picks

Best overall

Milwaukee M18 Cordless Sawzall

Best for: M18 users needing durable demolition saws

Power Source
M18 18V
Strokes Per Minute
3,000 RPM
Battery Included
Bare Tool
Tool Weight
7.67 pounds
Tool Length
15.1 inches
Blade Clamp
Quik Lok

View on Amazon: Milwaukee M18 Cordless Sawzall Affiliate link

The Milwaukee 2621-20 is an 18V cordless reciprocating saw running at 3,000 RPM. It uses a Quik Lok blade clamp for fast changes and features an all-metal gearbox for durability. The internal counter balance reduces vibration during heavy cuts. You need an M18 battery to operate it, as the tool is sold bare. It suits users already invested in the M18 ecosystem who need a robust saw for demolition or cutting.

Pros

  • Quik Lok blade clamp allows quick blade changes
  • All-metal gearbox protects internal components from drops
  • Internal counter balance reduces vibration during use
  • REDLINK Intelligence prevents overheating and power overload

Cons

  • Heavier at 7.4 pounds compared to compact competitors
  • Sold as a bare tool without battery or charger
  • Single-speed operation limited to 3,000 RPM

Good fit if

  • You already own M18 batteries and want tool-only compatibility
  • You need a durable saw with an all-metal gearbox for tough jobs
  • You prefer quick blade changes via the Quik Lok system

Skip if

  • You need a lightweight one-handed saw for tight spaces
  • You require variable speed control for delicate materials
  • You are buying your first tool and need a kit with a battery

Verdict: Milwaukee M18 18V Reciprocating Saw is a heavy-duty option for pros who prioritize durability and vibration control. It fits users who already have M18 batteries and need a reliable saw for demolition work.

Also great

RYOBI ONE+ HP 18V Brushless Reciprocating Saw

Best for: Users needing high-speed cutting power

Power Source
18V Cordless
Stroke Length
1-1/4"
Strokes Per Minute
0-3,200 SPM
Motor Type
Brushless
Battery Included
Tool only
Tool Weight
7.2 pounds

View on Amazon: RYOBI ONE+ HP 18V Brushless Reciprocating Saw Affiliate link

This RYOBI ONE+ HP 18V brushless reciprocating saw delivers up to 3,200 SPM with a 1-1/4-inch stroke length. The tool-free blade release lever allows for quick changes, while the variable speed trigger offers precise control. It weighs 7.2 pounds and includes a pivoting shoe and LED light. You will get aggressive cutting performance for demanding jobs. This tool-only model requires a separate battery.

Pros

  • Brushless motor provides up to 3,200 SPM
  • Tool-free blade release lever for quick changes
  • 1-1/4-inch stroke length for aggressive cutting
  • Built-in LED work light illuminates the area
  • Non-marring pivoting shoe protects surfaces

Cons

  • Heavier at 7.2 pounds compared to compact rivals
  • Sold as a bare tool without battery
  • Longer 19.2-inch length may be bulky for tight spaces

Good fit if

  • You need maximum cutting speed and power
  • You already own RYOBI 18V batteries
  • You want tool-free blade changes

Skip if

  • You require a one-handed compact design
  • You need a complete kit with battery and charger
  • You prefer a lighter tool under 5 pounds

Verdict: RYOBI ONE+ HP 18V Brushless Reciprocating Saw fits users who prioritize raw cutting speed and already have the compatible battery system. It is not ideal for those needing a lightweight, one-handed tool.

Also great

Makita 18V LXT Compact Reciprocating Saw

Best for: tight spaces and users with Makita batteries

Power Source
18V LXT
Stroke Length
1/2 in.
Strokes Per Minute
0-3,000 SPM
Battery Included
Bare tool only
Tool Weight
3.9 lbs. (with battery)
Tool Length
15-5/8 in.

View on Amazon: Makita 18V LXT Compact Reciprocating Saw Affiliate link

This Makita 18V LXT reciprocating saw offers a variable speed of 0-3,000 strokes per minute with a 1/2-inch stroke length. Its compact 15-5/8-inch design and 3.9-pound weight allow for easy handling in tight quarters. The tool-less blade change system speeds up swaps. It suits users who need a lightweight, maneuverable saw for close-quarter cutting tasks.

Pros

  • Variable speed control from 0 to 3,000 strokes per minute
  • Compact 15-5/8-inch length for tight spaces
  • Tool-less blade change system for quick swaps
  • Dual-position on/off switch for paddle or trigger operation

Cons

  • Sold as a bare tool without a battery
  • Heavier than some one-handed alternatives
  • Single battery platform limits cross-use with other brands

Good fit if

  • You need a compact saw for tight spaces
  • You already own Makita 18V LXT batteries
  • You prefer a lightweight tool for overhead work

Skip if

  • You need a one-handed reciprocating saw
  • You do not own an 18V battery
  • You require a higher stroke length than 1/2 inch

Verdict: Makita 18V Compact Reciprocating Saw fits users who prioritize compact size and lightweight handling in tight spaces. It is ideal for those already invested in the Makita 18V LXT battery system who need a versatile, maneuverable tool for close-quarter cutting.

Best budget

DEWALT 20V Brushless Reciprocating Saw

Best for: existing DEWALT 20V battery owners

Power Source
20V MAX
Stroke Length
1-1/8 in.
Motor Type
Brushless
Battery Included
Tool Only
Blade Clamp
Keyless, twist-style
Variable Speed Trigger
2-finger variable trigger

View on Amazon: DEWALT 20V Brushless Reciprocating Saw Affiliate link

This renewed DEWALT DCS382B is a 20V MAX cordless reciprocating saw. It uses a brushless motor for efficient cutting with a 1-1/8 inch stroke length. You control speed with a 2-finger variable trigger. The compact design aids mobility in tight spaces. It comes as a tool only, meaning you need your own battery. It suits users who already own DEWALT 20V batteries and need a reliable, compact saw for general demolition or pruning tasks.

Pros

  • Brushless motor for optimized cutting efficiency
  • 2-finger variable trigger for speed control
  • 1-1/8 inch stroke length for fast cuts
  • Keyless twist-style blade clamp for quick changes
  • Compact size for high range of motion

Cons

  • Sold as a tool only without a battery
  • Renewed condition may show cosmetic wear
  • No variable speed dial for fine adjustments

Good fit if

  • You already own DEWALT 20V MAX batteries
  • You need a compact saw for tight spaces
  • You want a brushless motor for longer life

Skip if

  • You need a complete kit with a battery
  • You require a new, factory-sealed unit
  • You prefer a standard single-finger trigger

Verdict: DEWALT DCS382B 20V Brushless Recip Saw offers efficient cutting in a compact body for users with existing 20V batteries. It is ideal for tradespeople who prioritize brushless performance and quick blade changes over included accessories.

Also great

DEWALT ATOMIC 20V MAX One-Handed Reciprocating Saw

Best for: One-handed use in tight spaces

Power Source
20V MAX
Motor Type
Brushless
Battery Included
Tool Only
Tool Length
12.5-inch front to back
Blade Clamp
Tool-free blade release
Variable Speed Trigger
Variable-speed trigger

View on Amazon: DEWALT ATOMIC 20V MAX One-Handed Reciprocating Saw Affiliate link

The DEWALT ATOMIC is a one-handed reciprocating saw designed for tight spaces. It measures 12.5 inches from front to back and weighs 1 pound. The brushless motor delivers efficient performance, while the pivoting shoe offers multiple points of contact. You get a variable-speed trigger and an LED light. This tool-only kit suits users needing a compact, lightweight option for demolition or pruning tasks.

Pros

  • Compact 12.5-inch length fits tight spaces
  • Lightweight 1-pound build for reduced fatigue
  • Brushless motor for improved performance
  • Pivoting shoe provides more contact points
  • LED illuminates dark work areas

Cons

  • Tool only; battery and charger not included
  • Smaller motor capacity than standard recip saws
  • No keyless chuck for blade changes

Good fit if

  • You need a one-handed tool for overhead work
  • You require a saw that fits in tight spaces
  • You already own 20V MAX batteries

Skip if

  • You need a full-size saw for heavy demolition
  • You want a complete kit with batteries included
  • You prefer a fixed shoe for stability

Verdict: DEWALT ATOMIC 20V MAX One-Handed Recip Saw is ideal for users who need a lightweight, compact tool for tight spaces. It fits those who already have 20V MAX batteries and prioritize maneuverability over raw power.

Best work light

DEWALT 20V MAX Compact Reciprocating Saw

Best for: confined spaces and low-light cutting

Power Source
20V MAX
Stroke Length
1-1/8 in.
Strokes Per Minute
0-2,900 SPM
Battery Included
Bare tool only
Tool Weight
4.96 lbs.
Tool Length
14 in.

View on Amazon: DEWALT 20V MAX Compact Reciprocating Saw Affiliate link

This compact reciprocating saw measures 14 inches in total length, allowing you to fit between studs and cut in confined spaces. It features a variable-speed trigger ranging from 0 to 2,900 strokes per minute for precision control. The 1-1/8-inch stroke length delivers fast cutting speeds, while the bright LED light illuminates dark work areas. You get a 4-position tool-free blade clamp for versatility.

Pros

  • Compact 14-inch total length fits between studs
  • Variable-speed trigger offers 0-2,900 SPM control
  • Bright LED illuminates dark work areas
  • 4-position tool-free blade clamp for flush cuts

Cons

  • Lower maximum speed of 2,900 SPM compared to 3,000 SPM on the Milwaukee 2621-20
  • Heavier at 4.96 lbs compared to lighter alternatives
  • Bare tool only requires separate battery purchase

Good fit if

  • You need to make cuts in tight, confined spaces
  • You require an LED light for visibility in dark areas
  • You prefer tool-free blade changes with multiple positions

Skip if

  • You need maximum cutting speed above 2,900 SPM
  • You want a lighter tool for overhead work
  • You prefer a one-handed design for easier handling

Verdict: DEWALT 20V MAX Compact Recip Saw suits users who prioritize compact size and LED visibility over raw speed. It is a practical option for tight spaces where its 14-inch length provides an advantage.

Best premium

DEWALT 20V Brushless Reciprocating Saw

Best for: Users with existing DEWALT 20V batteries

Power Source
20V MAX
Stroke Length
1-1/8 in.
Motor Type
Brushless
Battery Included
Tool Only
Blade Clamp
Keyless, twist-style
Variable Speed Trigger
2-finger variable trigger

View on Amazon: DEWALT 20V Brushless Reciprocating Saw Affiliate link

This DEWALT reciprocating saw uses a brushless motor for efficient cutting. It features a 1-1/8 inch stroke length and a 2-finger variable trigger for speed control. The compact design measures 16 inches long, aiding mobility in tight spaces. A pivoting shoe stabilizes the tool against the workpiece. You get a keyless blade clamp for quick changes. This bare tool requires a separate 20V MAX battery.

Pros

  • Brushless motor optimizes cutting power and efficiency
  • 1-1/8 inch stroke length enables fast cuts
  • 2-finger variable trigger offers precise speed control
  • Compact 16-inch length improves range of motion
  • Pivoting shoe stabilizes the saw during use

Cons

  • Sold as a bare tool without battery
  • No electronic clutch to reduce kickback
  • Fixed 1-1/8 inch stroke length lacks adjustment

Good fit if

  • You need a compact saw for tight spaces
  • You already own DEWALT 20V MAX batteries
  • You prefer a pivoting shoe for stability

Skip if

  • You require a battery included in the box
  • You need variable stroke length settings
  • You want an electronic clutch for safety

Verdict: DEWALT DCS382B 20V MAX Compact Recip Saw fits users who already have DEWALT batteries and need a compact tool for tight spaces. It delivers steady cuts through its brushless motor and pivoting shoe.

Specifications side by side

Spec Milwaukee M18 Cordless Sawzall RYOBI ONE+ HP 18V Brushless Reciprocating Saw Makita 18V LXT Compact Reciprocating Saw DEWALT 20V Brushless Reciprocating Saw DEWALT ATOMIC 20V MAX One-Handed Reciprocating Saw DEWALT 20V MAX Compact Reciprocating Saw DEWALT 20V Brushless Reciprocating Saw
Power Source M18 18V 18V Cordless 18V LXT 20V MAX 20V MAX 20V MAX 20V MAX
Stroke Length not stated 1-1/4" 1/2 in. 1-1/8 in. not stated 1-1/8 in. 1-1/8 in.
Strokes Per Minute 3,000 RPM 0-3,200 SPM 0-3,000 SPM not stated not stated 0-2,900 SPM not stated
Motor Type not stated Brushless not stated Brushless Brushless not stated Brushless
Battery Included Bare Tool Tool only Bare tool only Tool Only Tool Only Bare tool only Tool Only
Tool Weight 7.67 pounds 7.2 pounds 3.9 lbs. (with battery) not stated not stated 4.96 lbs. not stated
Tool Length 15.1 inches 19.2 inches 15-5/8 in. not stated 12.5-inch front to back 14 in. not stated
Blade Clamp Quik Lok Tool-free blade release lever Tool-less blade change Keyless, twist-style Tool-free blade release 4-position, tool-free Keyless, twist-style
Variable Speed Trigger not stated Variable speed trigger not stated 2-finger variable trigger Variable-speed trigger Variable-speed trigger 2-finger variable trigger
Voltage 18V 18V 18V 20V 20V 20V 20V
Included Tools Reciprocating Saw Reciprocating Saw Reciprocating Saw Reciprocating Saw Reciprocating Saw Work Light, Reciprocating Saw Reciprocating Saw
Dimensions 15.1 × 7.1 × 23 inches 19.2 × 6.14 × 3.27 inches 17 × 4 × 7 inches not stated 3.58 × 3.58 × 3.58 inches 5.81 × 1.38 × 2.95 inches 16 × 7 × 4 inches
Weight 7.67 pounds 7.2 pounds 2.69 pounds not stated 1 pounds 4.96 pounds not stated
Size Pack of 1 not stated not stated not stated One Size One Size One Size
Color Red/Black Green/Black Teal Black Multi Multi Black
Model 2621-20 PBLRS02B XRJ01Z not stated DCS369B DCS387B DCS382B

Frequently asked questions

Which reciprocating saw is the lightest option for tight spaces?

The DEWALT ATOMIC 20V MAX One-Handed Reciprocating Saw is the lightest choice at just 1 pound. Its compact design measures 3.58 inches in width, height, and length. This tool fits users who prioritize maneuverability over raw power. It is ideal for one-handed use in confined areas where standard saws cannot reach.

Are there brushless motor alternatives to the Milwaukee model?

Yes, both the RYOBI ONE+ HP and the DEWALT DCS382B feature brushless motors. The RYOBI model offers high-speed cutting power for users needing efficiency. The DEWALT option provides steady cuts through its brushless design. Both tools deliver reliable performance while extending battery life compared to brushed alternatives.

Which saw includes a built-in work light?

The DEWALT 20V MAX Compact Reciprocating Saw includes a work light. This feature aids visibility in low-light conditions or tight spaces. The tool measures 5.81 inches in length, providing a compact profile. It suits users who prioritize LED visibility and compact size over raw cutting speed.

Is there a compact option from Makita?

The Makita 18V LXT Compact Reciprocating Saw is a compact option. It weighs only 2.69 pounds and measures 17 inches in length. This tool fits users who need lightweight handling in tight spaces. It is ideal for those already invested in the Makita 18V LXT battery system.

Which saw is best for existing DEWALT 20V battery owners?

The DEWALT DCS382B 20V Brushless Reciprocating Saw is ideal for existing 20V battery owners. It offers efficient cutting in a compact body. The tool features a pivoting shoe for steady cuts. It suits tradespeople who prioritize brushless performance and quick blade changes over included accessories.

What is the difference between the RYOBI and Milwaukee models?

The RYOBI ONE+ HP uses a brushless motor for higher efficiency, while the Milwaukee relies on an all-metal gearbox. The RYOBI weighs 7.2 pounds, slightly lighter than the Milwaukee’s 7.4-pound frame. The RYOBI measures 19.2 inches long, making it comparable in length to the Milwaukee’s 15.1-inch body.

Which tool is best for demolition work?

The Milwaukee M18 Cordless Sawzall is a heavy-duty option for pros who prioritize durability. It features a counterbalance mechanism to reduce vibration during heavy demolition. The tool weighs 7.4 pounds and includes a Quik Lok blade clamp. It fits users who already have M18 batteries and need a reliable saw.

See also