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A conventional M18 option for existing battery owners
Choose the 2621-20 when the bare tool fits your M18 equipment budget
The Milwaukee 2621-20 is worth considering when you already own suitable M18 power equipment and need a full-size rough-cutting saw. Its lever-action blade clamp, counterbalance mechanism and metal gearing give it a straightforward conventional feature set.
If you need batteries and a charger too, compare the 2821-22 M18 FUEL kit before assembling a complete purchase around the bare tool. The 2621-20 is not a FUEL or ONE-KEY model, and those separate product features should not be assigned to it.
Milwaukee’s official 2620-20 page states that the older model is no longer available from the manufacturer and identifies 2621-20 as its replacement. This review now focuses on that named replacement. Some old-stock offers can still appear on marketplaces; their presence does not undo the manufacturer’s product transition.
The exact 2621-20 Amazon US listing had new third-party offers through Buying Options in October 2026. Check the actual seller, condition and contents. This is a researched buying assessment without a hands-on speed or durability test.
Good reasons to consider it
- Uses an existing approved M18 power arrangement
- Lever-action blade clamp for changes
- Counterbalance and all-metal gearing design
What to weigh before buying
- Battery and charger are separate purchases
- Full-size body and working weight need access planning
- Do not transfer FUEL or ONE-KEY features to this model
2621-20 bare tool vs. 2821-22 M18 FUEL kit
Swipe the table sideways on a phone.
| Product and buying link | Choose for | Key distinction | Check before buying |
|---|---|---|---|
| Milwaukee 2621-20 | Existing M18 owners needing a conventional full-size saw | Lever-action clamp, counterbalance and metal gearing | Bare tool; not M18 FUEL or ONE-KEY |
| Milwaukee 2821-22 kit | Starting with a named M18 FUEL battery kit | Conventional M18 FUEL SAWZALL kit without ONE-KEY | Verify batteries, charger and case in the exact offer |
The 2621-20 is the maker-named conventional M18 replacement for 2620-20. The 2821-22 is a separate brushless FUEL kit. Existing power equipment can favor a bare-tool purchase; a new system deserves a kit comparison.
Milwaukee 2821-22 kit: Starting with a named M18 FUEL battery kit
The 2821-22 is a useful comparison for someone who needs the power equipment as well as the saw. Check the named kit contents and current seller package against the manufacturer description. A complete package can simplify a new-system purchase.
The 2822-20 adds connected customization, but that does not make it automatically better for every demolition job. If you will not configure profiles, focus on the blade, support and battery arrangement you will actually use. This comparison does not claim a measured cutting advantage for either model.
The buyer who should compare the 2621-20
The 2621-20 can make sense when you already have approved M18 packs and charging equipment, and the full-size format fits your rough-cutting tasks. Adding a bare saw to an existing platform is a different budget decision from buying your first cordless tool. Include suitable blades and work support as well as the saw.
If you are starting from scratch, compare the complete kit total instead. A low bare-tool price can stop being the best value after the missing battery and charger purchases. Choose around the jobs you expect to perform, including access and the required finish. A reciprocating saw is a demolition and rough-cutting tool rather than a fine-joinery saw.
Conventional M18 is a separate choice from FUEL
The manufacturer identifies this model as M18, with FUEL and ONE-KEY both marked no in its specifications. Do not use the general Milwaukee brand name to assign brushless FUEL performance claims or connected profiles to it. Compare the exact model rather than a broad product family.
The 2821-22 kit is a separate M18 FUEL purchase arrangement. That makes it relevant when you want a brushless full-size saw and power equipment included, but it does not prove a measured cutting advantage for your material. This review has not run a head-to-head test. Compare the features, contents and total cost you can verify rather than marketing percentages from unrelated baselines.
Counterbalance and gearing: useful design, realistic expectations
Milwaukee documents a counterbalance mechanism intended to reduce vibration and all-metal gearing and gear case for durability. These are relevant design features to weigh, not promises that the tool cannot be damaged or that every cutting session is comfortable.
Blade wear and workholding still matter. Unsupported pipe, a pinched blade or teeth unsuitable for the material can make operation harder despite a counterbalance. Secure the work, maintain the prescribed shoe contact and handling, and avoid forcing the blade. If behavior changes or overheating occurs, stop and inspect the setup. The article does not claim measured vibration reduction or a durability score for a tool it has not physically tested.
Full-size access and working weight matter
Milwaukee lists an 18-inch body and 7.4-lb bare weight. Add the approved battery when judging the working package. A full-size saw can be relevant for substantial rough cuts but awkward for a small repair where the handle and blade cannot be positioned with control.
Measure the space around the intended operation and inspect behind the cut. A compact alternative may be easier to place for access-focused work, while neither size establishes a clean visible finish. Do not choose by maximum blade reach alone. The tool body, hand positions, material support and unseen blade tip all need room throughout the cut.
The clamp makes blade changes easier, not optional checks
The lever-action QUIK-LOK clamp is intended for quick blade changes. Remove the battery before handling the blade and follow the exact installation instructions. Seat the blade fully and verify retention before operating. A tool-free clamp does not justify continuing with a damaged shank or loose blade.
Choose teeth for the material and possible embedded fasteners. Select enough length to stay beyond the work through its full movement without unnecessary flex or reach into an obstruction. One wood blade cannot be assumed appropriate for metal, masonry or every plastic. Keep a small task-specific selection and replace worn pieces rather than compensating with pressure.
Evaluate the seller offer as a complete package
The checked listing had new third-party offers without a featured offer. That is evidence of buying options at the check, not a guarantee that all sellers provide identical contents, delivery or warranty eligibility. Verify those details before ordering.
The 2621-20 here is a bare tool. Account for approved M18 power equipment and charging turnaround, particularly for repeated work. Existing small packs can be useful elsewhere without being the best plan for a long demolition session. Do not promise all-day runtime from the platform label. Compare the complete arrangement with a named kit and choose the one that fits the actual workload.
Prepare for a supported rough cut
Choose the blade before starting
Use a wood blade for clean lumber, a demolition blade suitable for embedded fasteners when nails are possible, and a metal blade matched to the thickness of metal being cut. A pruning blade is a separate choice for green wood. One included blade cannot be assumed suitable for every material.
Match blade length to the full cut and stroke. Avoid a long blade solely for extra reach: it can flex, and the unseen tip still needs clearance. Check that the blade is fully seated and securely locked with the battery removed before handling the clamp.
Support the work and plan the exit
Clamp loose stock to a stable surface and leave space for the blade beneath and behind it. Support the offcut so it does not close the kerf and pinch the blade. Start slowly, establish shoe contact, and avoid forcing the motor when progress slows.
Inspect the work for screws, nails and hidden services. Wear appropriate eye and hearing protection and follow the manual. A blade can remain hot after a cut, so let it cool before changing it. Remove the battery before adjustments or clearing a jam.
Keep the saw ready for the next repair
After use, remove the battery and clear loose debris from the exterior and ventilation openings using the manual’s cleaning method. Inspect the blade for bent sections, damaged teeth or wear that makes cutting harder. Store blades so their teeth are protected rather than loose in a bag with other tools.
Do not continue working with a damaged clamp, loose shoe or unusual overheating. Let the tool cool and check the battery, blade and work support before resuming. Cleaning and fresh blades are practical care steps; they do not justify opening the motor housing or applying unapproved lubricants.
2621-20 buying questions
Did Milwaukee identify it as the 2620 replacement?
Yes. Milwaukee’s official 2620-20 page names 2621-20 as its replacement. Marketplace old-stock offers may still exist.
Is the 2621-20 a FUEL model?
No. The manufacturer identifies FUEL as no for this conventional M18 model.
Does it have ONE-KEY?
The manufacturer identifies ONE-KEY as no. Do not transfer the connected features of another SAWZALL model.
Does the bare tool include power equipment?
The linked offer is tool only. Verify actual contents and budget for an approved battery and charger if needed.
Should I replace a working 2620?
Not solely because this buying page changed. Use its exact instructions and service information and assess whether it meets your work.
Can it make precision finish cuts?
It is a rough-cutting saw. Choose an appropriate precision tool for visible fitted joints and clean straight panel edges.
Choose the exact model and complete equipment cost
The 2621-20 deserves comparison for M18 owners who want a conventional full-size rough-cutting saw. Confirm the seller offer and appropriate power equipment.
Compare the 2821-22 kit when starting a system or when its separate brushless package fits better. Keep the conventional M18 and FUEL feature sets distinct.
Research and editorial approach
Milwaukee’s official old-model replacement notice, current model specifications and exact Amazon US buying options were checked in October 2026. The replacement relationship is stated by the manufacturer. No independent speed, runtime or durability test is claimed.